Security advisory

Security Advisory

Multiple Critical Vulnerabilities in Citrix NetScaler ADC/Gateway 

Security Advisory: Multiple vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway One Actively Exploited in Wild .

Citrix credited Jimi Sebree of Horizon3.ai, Jonathan Hetzer of Schramm & Partnerfor and Francois Hammerli for discovering and reporting the vulnerabilities.

Severity Critical 
CVSS Score 9.2 
CVEs CVE-2025-7775, CVE-2025-7776, CVE-2025-8424 
POC Available No 
Actively Exploited Yes 
Exploited in Wild Yes 
Advisory Version 1.0 

Overview 
A critical zero-day vulnerability, tracked as CVE-2025-7775, puts over 28,200 Citrix instances at risk worldwide.

This flaw allows attackers to run malicious code on affected systems without authentication. The issue is actively being exploited in the wild and immediate action is needed to secure systems.  Another two flaws were fixed in the latest updates.  

Vulnerability Name CVE ID Product Affected Severity 
Memory overflow vulnerability leading to RCE CVE-2025-7775 NetScaler ADC & Gateway 9.2 
Memory overflow vulnerability leading to unpredictable behavior CVE-2025-7776 NetScaler ADC & Gateway 8.8 
Improper access control on the NetScaler Management Interface CVE-2025-8424 NetScaler ADC & Gateway 8.7 

Technical Summary 

The NetScaler ADC and NetScaler Gateway appliances are affected by multiple critical vulnerabilities that pose significant risks ranging from Remote Code Execution (RCE) and Denial of Service (DoS) to improper access control.

These include memory overflow flaws in configurations such as VPN virtual servers, load balancing virtual servers using IPv6 or DBS IPv6 services, and misconfigurations involving PCoIP profiles. Additionally, the management interface is exposed due to weak access control mechanisms, which could allow unauthorized administrative access if attackers reach key management IP addresses like NSIP or SNIP. CISA has added one vulnerability (CVE-2025-7775) to its Known Exploited Vulnerabilities (KEV) Catalog and strongly urges organizations to apply patches immediately to prevent active exploitation. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-7775  NetScaler ADC & Gateway  A critical memory overflow vulnerability in NetScaler ADC and Gateway that can lead to Remote Code Execution or DoS when configured as a Gateway (e.g., VPN, ICA Proxy, CVPN, RDP Proxy), AAA virtual server, or LB virtual server using IPv6 or DBS IPv6 services including CR virtual servers of type HDX. Remote Code Execution or DoS  
CVE-2025-7776  NetScaler ADC & Gateway A memory overflow vulnerability under analysis, currently known to cause unpredictable system behavior and potential DoS when a PCoIP Profile is bound to a Gateway-configured NetScaler instance (VPN, ICA Proxy, CVPN, RDP Proxy), Erroneous behavior and DoS 
CVE-2025-8424 NetScaler ADC & Gateway An improper access control vulnerability on the NetScaler Management Interface, allowing unauthorized access when attackers can reach management IPs (NSIP, Cluster Management IP, local GSLB Site IP, or SNIP with Management Access), affecting NetScaler ADC and Gateway appliances. Unauthorized access 

Recommendations 

NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.  

  • NetScaler ADC and NetScaler Gateway 14.1-47.48 and later releases 
  • NetScaler ADC and NetScaler Gateway 13.1-59.22 and later releases of 13.1 
  • NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1-37.241 and later releases of 13.1-FIPS and 13.1-NDcPP 
  • NetScaler ADC 12.1-FIPS and 12.1-NDcPP 12.1-55.330 and later releases of 12.1-FIPS and 12.1-NDcPP 

Here are some other recommendations below 

  • Monitor systems for unusual activity or unauthorized changes. 
  • Limit access to Citrix instances from untrusted networks. 
  • Use firewalls to block suspicious traffic targeting Citrix instances. 

Conclusion: 

Combined with additional high-severity vulnerabilities the overall threat landscape demands immediate attention. Organizations are strongly urged to apply the latest patches, restrict access to management interfaces and closely monitor for signs of compromise. Delayed action could result in significant operational and security impacts. 

The active exploitation of CVE-2025-7775 highlights a critical security threat affecting multiple NetScaler ADC and Gateway instances globally. This zero-day confirmed exploitation in the wild poses a severe risk of Remote Code Execution and service disruption.

References: 

  

Security Advisory

Docker Desktop Vulnerability Allows Full Host Compromise via Exposed API 

A critical vulnerability has been discovered in Docker Desktop for Windows, macOS and Linux distributions.

The vulnerability allows malicious containers to gain full access to the host system by misusing an exposed Docker Engine API endpoint.

Docker Desktop

Docker a must to have in modern enterprise infrastructure, as a strong foundation pillar that powers cloud-native applications including CI/CD pipelines and microservices at massive scale. Any vulnerabilities in Docker images and runtimes are particularly dangerous as they can open the door to severe supply-chain attacks, container escapes, data leaks, and even full host compromise. 

OEM Docker 
Severity Critical 
CVSS Score 9.3 
CVEs CVE-2025-9074 
POC Available No 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

The vulnerability, considered as CVE-2025-9074, which affects Docker Desktop versions prior to 4.44.3. This exploitation requires no special configuration and can be triggered with minimal interaction. Docker has addressed this issue in version 4.44.3, administrator or user are suggested to upgrade to the latest version. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
Docker Engine API Exposure / Container Escape  CVE-2025-9074 Docker Desktop 
(Windows, macOS, Linux) 		 Critical  v4.44.3 

Technical Summary 

The vulnerability comes from Docker Desktop’s internal API endpoint (http://192.168.65.7:2375) being accessible from any container running locally. The endpoint with lack of authentication allows privileged API commands such as creating new containers, mounting host directories, and controlling images. 

On Windows with WSL, this becomes riskier because attackers could mount your C: drive with the same rights, giving them full access to the machine. With the safety settings like Enhanced Container Isolation (ECI) or disabling TCP exposure, don’t fully block this problem. 

CVE ID System Affected  Vulnerability Details Impact 
 CVE-2025-9074  v4.25 before v4.44.3  An internal HTTP API is automatically open to containers on the default network. This could allow us to run powerful commands – creating containers, managing images or accessing the host system  Full host compromise, including file system and resource access 

Remediation: 

  • Upgrade to Docker Desktop version 4.44.3 or later across all supported platforms. 

Recommendations: 

Here are some recommendations below  

  • Don’t depend only on container isolation, treat development tools as part of the security perimeter. 
  • Use network segmentation and zero-trust controls to protect container workloads. 
  • Monitor container traffic for unauthorized API access attempts. 
  • Apply strict IAM rules and give users only the permissions they really need on Docker hosts. 

Conclusion: 
CVE-2025-9074 is a critical container escape vulnerability exposing host systems to complete compromise. While no active exploitation has been reported, the weakness is easy to exploit. Immediate patching and environment hardening are strongly recommended for all Docker Desktop users. 

References: 

Security Advisory

Apple Patches Zero-Day Vulnerability Exploited in Targeted Attacks (CVE-2025-43300) 

Security Advisory : Apple has released critical security patches to address a newly discovered zero-day vulnerability, CVE-2025-43300, that was found to be actively exploited in targeted attacks.

To protect users, Apple has issued patches in iOS 18.6.2, iPadOS 18.6.2, iPadOS 17.7.10 and the latest macOS versions.

OEM Apple 
Severity High 
CVSS Score 8.8 
CVEs CVE-2025-43300 
POC Available No 
Actively Exploited Yes 
Exploited in Wild Yes 
Advisory Version 1.0 

Overview  The vulnerability resides in Apple’s ImageIO framework, which is used for handling image files across iOS, iPadOS, and macOS platforms. According to Apple, the flaw may have been used in sophisticated, targeted attacks, although exact details have not been disclosed.

The vulnerability affects a wide range of devices, including iPhones starting from the XS, multiple iPad models and Macs running macOS Ventura, Sonoma and Sequoia. This marks the seventh zero-day exploited in the wild that Apple has addressed in 2025, underscoring the increasing frequency and severity of threats targeting Apple users. 

                Vulnerability Name CVE ID Product Affected Severity Fixed Version 
An out-of-bounds write issue   CVE-2025-43300 iPhone, iPad, macOS  High iOS 18.6.2, iPadOS 18.6.2, iPadOS 17.7.10, macOS 13.7.8, macOS 14.7.8, macOS 15.6.1 

Technical Summary 

The vulnerability, CVE-2025-43300, is classified as an out-of-bounds write issue within the ImageIO framework.

It can be exploited when a specially crafted image file is processed, causing memory corruption that could allow an attacker to execute arbitrary code on the affected device.

This makes it a critical security flaw, particularly because the attack vector image files are common and often considered low risk. Apple has mitigated vulnerability by improving bounds by checking in the affected code.

The exploitation of this bug in the wild indicates a high level of sophistication, likely by advanced persistent threat actors targeting specific individuals. The technical nature of the bug aligns with a broader trend in which attackers exploit flaws in media-handling components to achieve remote code execution. As such, this patch not only fixes a critical issue but also highlights the need for continued vigilance and timely system updates. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-43300 iPhones, iPads, Macs. Critical out-of-bounds write vulnerability in Apple’s ImageIO framework that allows remote code execution by processing a malicious image. It has been actively exploited in highly targeted attacks on iOS, iPadOS, and macOS devices, prompting urgent patches.  Remote code execution via malicious image zero-click attack surface 

Apple has so far fixed a total of seven zero-day vulnerabilities in 2025 that were actively exploited in real-world attacks, including CVE-2025-43300, reflecting an ongoing effort to patch critical security flaws across iOS, iPadOS, and macOS platforms. 

  • CVE-2025-24085: A memory corruption flaw in WebKit that could allow remote code execution via malicious web content. 
  • CVE-2025-24200: An elevation of privilege vulnerability in the kernel, enabling attackers to gain higher system privileges. 
  • CVE-2025-2420: A logic issue in the kernel that could lead to arbitrary code execution by a malicious app. 
  • CVE-2025-31200: A vulnerability in the CoreGraphics framework allowing remote code execution when processing malicious PDF files. 
  • CVE-2025-31201: An issue in the IOMobileFrameBuffer kernel extension that could permit a local attacker to escalate privileges. 
  • CVE-2025-43200: A flaw in the AppleAVD driver leading to a potential kernel privilege escalation. 
  • CVE-2025-43300: An out-of-bounds write vulnerability in the ImageIO framework actively exploited through malicious images, enabling remote code execution. 

Remediation: 

Update your Apple devices immediately to the latest patched versions: 

  • iPhone – iOS 18.6.2 
  • iPad – iPadOS 18.6.2/17.7.10 
  • macOS – macOS Ventura 13.7.8, Sonoma 14.7.8 or Sequoia 15.6.1. 

Conclusion: 
Apple has urgently patched seven critical zero-day vulnerabilities in 2025, including CVE-2025-43300, that were actively exploited in targeted attacks.

Users are strongly advised to update their devices immediately to stay protected against these serious threats. 

In addition, CISA has added CVE-2025-43300 to its Known Exploited Vulnerabilities (KEV) Catalog under BOD 22-01, requiring federal agencies to remediate the flaw within specified timelines.

While the directive is mandatory for federal agencies, CISA strongly urges all organizations to prioritize remediation of KEV-listed vulnerabilities to reduce their exposure to active threats. 

References: 

Security Advisory

WhatsApp Privacy Advisory: Protect Your Conversations 

Overview Security Advisory:

WhatsApp provides end-to-end encryption by default, ensuring that only you and your intended recipient can read messages. However, encryption alone does not guarantee complete privacy. Misconfigured or disabled privacy settings may still expose user information, media or allow unauthorized access. 

These advisory highlights the most important privacy features that should be enabled, along with a checklist for additional protections. 

Critical Privacy Features to Enable 

  1. Advanced Chat Privacy 

This feature strengthens the security of your conversations by limiting how chats and media can be shared outside WhatsApp. 

Benefits: 

  • Prevents chat exports that could expose sensitive data. 
  • Restricts unauthorized forwarding or third-party use of your conversations. 
  • Protects against data mining and AI-driven scanning, ensuring personal and business chats remain confidential. 
  • Gives you greater control over how your messages are handled beyond WhatsApp. 
  • Enabling this feature is highly recommended, especially for users discussing sensitive financial, personal, or corporate information. 
  1. End-to-End Encrypted Backups 

While chats are encrypted in transit, backups stored on Google Drive or iCloud are not encrypted by default. Activating encrypted backups ensures: 

  • Only you can access backup data, using your chosen password or encryption key. 
  • Neither WhatsApp, Google, nor Apple can read your chat history. 
  • Added protection if your cloud account is compromised. 
  1. Disappearing Messages 

This feature allows messages to auto-delete after 24 hours, 7 days, or 90 days. 

Benefits: 

  • Reduces digital footprint and limits data exposure over time. 
  • Ensure sensitive conversations do not remain accessible indefinitely. 
  • Useful for both personal privacy and business confidentiality. 

Quick Setup Checklist 

Step Action 
1 Enable Advanced Chat Privacy in all important chats 
2 Turn on End-to-End Encrypted Backup 
3 Run Privacy Checkup: review visibility and group settings 
4 Activate Disappearing Messages where appropriate 
5 Enable App/Chat Locks (biometric/PIN) 
6 Set up Two-Factor Authentication 
7 Disable Media Auto-Saving 
8 Check Linked Devices and log out extras 
9 Restrict visibility of Last Seen, Profile Photo, About, and disable Read Receipts if desired 

Recommendations 

  • Enable Advanced Chat Privacy immediately to prevent misuse of conversations. 
  • Activate encrypted backups for long-term data security. 
  • Use disappearing messages for sensitive discussions. 
  • Regularly review privacy settings and update WhatsApp to the latest version. 

Conclusion: 
Strengthening WhatsApp privacy settings is critical for protecting both personal and professional communication. Enabling key features like Advanced Chat Privacy, Encrypted Backups, and Disappearing Messages provides stronger control over data security and reduces risks of unauthorized access or misuse. 

  

Security Advisory

Microsoft IIS Web Deploy RCE Vulnerability Allows Authenticated Remote Code Execution 

Summary of Vulnerability in Microsoft Web Deploy 4.0 (CVE-2025-53772) revels critical security flaw that could be exploited by authenticated attackers to execute code on affected systems. This is the bug disclosed on August 12, 2025, with a CVSS score of 8.8, indicating high severity.

Severity High 
CVSS Score 8.8 
CVEs CVE-2025-53772 
POC Available No 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

A vulnerability in Microsoft Web Deploy 4.0 (CVE-2025-53772) allows authenticated attackers to remotely execute arbitrary code on affected systems.

The issue arises from the insecure deserialization of untrusted data. Due to its low privilege requirements and lack of user interaction, this flaw poses a significant threat, especially in enterprise deployment environments. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​ Web Deploy Remote Code Execution via Deserialization  CVE-2025-53772 Microsoft Web Deploy 4.0  High  10.0.2001 or later 

Technical Summary 

The vulnerability stems from insecure deserialization of untrusted data (CWE-502), allowing remote attackers to craft malicious HTTP requests that trigger code execution on the web server. This flaw enables remote code execution (RCE) under specific conditions, where the attacker must have authenticated access and network connectivity.

The attack is network-based, requires only low-privilege access and does not rely on user interaction. Successful exploitation can result in a high impact on confidentiality, integrity and availability of the affected system. As of the time of publication, no public exploit has been reported and the exploit maturity is considered unproven. 

CVE ID CVSS Score System Affected  Vulnerability Details Impact 
CVE-2025-53772 8.8 Microsoft Web Deploy 4.0 Web Deploy deserializes untrusted input, allowing remote attackers to execute arbitrary code. Remote Code Execution 

Recommendations: 

Here are some recommendations below 

  • Apply Microsoft Web Deploy version 10.0.2001 or latest version. 
  • Limit access to Web Deploy endpoints to trusted IP ranges or internal networks only. 
  • Audit logs for unusual HTTP POST activity to Web Deploy endpoints. 

Conclusion: 
While CVE-2025-53772 has not yet been publicly exploited, the nature of the flaw and the ease of attack (low privileges, no user interaction) significantly increases the risk of widespread exploitation, particularly in enterprise deployment environments.

Organizations using Microsoft Web Deploy 4.0 should update and apply the latest patch without delay.

This vulnerability affects Web Deploy 4.0 and requires low privileges to exploit, making it particularly concerning for organizations that use this deployment tool in their infrastructure. The vulnerability allows an authenticated attacker to exploit the system via low-complexity network-based attacks. 

References: 

Security Advisory

Microsoft Patch Tuesday August Patches 119 Vulnerabilities; Publicly Disclosed Kerberos Zero‑Day

Microsoft Patch Tuesday : Key points:

119 vulnerabilities discovered & 13 are classified as Critical rating meaning as per Microsoft’ they could be abused by malware or malcontents to gain remote access to a Windows system with little or no help from users.

CVE-2025-53779 is Windows Kerberos Elevation of Privilege Vulnerability

The vulnerabilities fall into multiple categories, including Remote Code Execution (RCE), Elevation of Privilege (EoP), Information Disclosure, Spoofing, Denial of Service (DoS), and Tampering. Below is a detailed breakdown of the vulnerabilities by category, along with key insights for organizations to prioritize their patching efforts.

OEM Microsoft 
Severity Critical 
Date of Announcement 2025-08-12 
No. of Patches  119 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

Microsoft has released security updates addressing 119 vulnerabilities in the August 2025 Patch Tuesday cycle, including one publicly disclosed zero-day in Windows Kerberos. Of these, 13 are classified as Critical, covering a wide range of products such as Windows components, Office, Azure, Exchange and SharePoint. 

  • 111 Microsoft CVEs addressed 
  • 8 non-Microsoft CVEs addressed 

Breakdown of August 2025 Vulnerabilities 

  • 44 Elevation of Privilege Vulnerabilities 
  • 35 Remote Code Execution Vulnerabilities 
  • 18 Information Disclosure Vulnerabilities 
  • 9 Spoofing Vulnerabilities 
  • 4 Denial of Service Vulnerabilities 
  • 1 Tampering vulnerabilities 
Vulnerability Name CVE ID Product Affected Severity CVSS Score 
Windows Kerberos Elevation of Privilege Vulnerability CVE-2025-53779 Windows Server 2025 High 7.2 

Technical Summary 

The August 2025 Patch Tuesday addresses a publicly disclosed zero-day vulnerability CVE-2025-53779 in Windows Kerberos.

This elevation of privilege flaw, related to improper path handling in domain-managed service accounts (dMSA), could allow a local attacker to gain domain administrator privileges.

Microsoft also patched several critical Remote Code Execution (RCE) vulnerabilities across Windows Graphics, GDI+, Office, DirectX, and Hyper-V. Many of these vulnerabilities require minimal or no user interaction, such as simply opening a file in the preview pane or processing crafted image or network messages, making them high-risk for enterprise environments. 

CVE ID System Affected Vulnerability Details Impact 
CVE-2025-53779 Microsoft Windows Server 2025 Relative path traversal in Windows Kerberos allows an authorized attacker to elevate privileges over a network. Privilege escalation 

Source: Microsoft and NVD 

In addition to the publicly disclosed vulnerability, several other critical and high-severity issues were addressed: 

  • CVE‑2025‑50165 and CVE‑2025‑53766: Graphics-related RCEs, particularly vulnerable due to their ability to execute code without user interaction and potential wormable behavior. 
  • CVE‑2025‑53792: Azure Portal, privilege escalation vulnerability, critical impact on cloud administration surface. 
  • CVE‑2025‑50171: Remote Desktop Server, allows remote code execution over RDP. 
  • CVE‑2025‑53778: Windows NTLM, elevation of privilege exploitation includes lateral movement across enterprise networks. 
  • CVE‑2025‑53786: Microsoft Exchange Server, hybrid environment vulnerability with potential for cloud environment hijacking. 

Key Affected Products and Services 

The vulnerabilities addressed in August 2025 impact a wide range of Microsoft products and services, including: 

  • Windows Core and Authentication Systems 

Includes fixes in Windows Server (Kerberos), Windows Graphics Component, GDI+, DirectX Graphics Kernel, NTLM, Hyper‑V, MSMQ, Remote Desktop and more. 

  • Microsoft Office Suite and Productivity Tools 

Microsoft Office and Word, notably through Preview Pane RCE flaws, as well as SharePoint (RCE and EoP), Exchange Server (Privilege Escalation in hybrid setups) and Teams. 

  • Cloud and Azure Ecosystem 

Critical issues in Azure Virtual Machines (spoofing and info disclosure), Azure Stack Hub and potentially Azure Portal. 

  • Virtualization and Hypervisor Technologies 

Updates include vulnerabilities in Hyper‑V (RCE and privilege escalation) and DirectX graphics kernel components relevant to virtualization. 

  • Development Tools 

Fixes include vulnerabilities affecting Visual Studio and GitHub Copilot, reinforcing development environments. 

  • Messaging and Queuing Services 

Includes a critical RCE in Microsoft Message Queuing (MSMQ). 

  • Browsers: 
    Microsoft Edge (Chromium-based). 

Remediation: 

  • Apply Patches Promptly: Install the August 2025 security updates immediately to mitigate risks. 

Conclusion: 

Microsoft’s August 2025 Patch Tuesday, disclosed zero-day CVE-2025-53779 is another privilege escalation flaw in Windows Kerberos that stems from a case of relative path traversal. Akamai researcher Yuval Gordon has been credited with discovering and reporting the bug.

Aside from the vulnerabilities patched and disclosed in the regular monthly patch release for August, it is worth noting that one week ahead of the monthly update, Microsoft disclosed 4 vulnerabilities affecting Microsoft cloud services.

References: 

Security Advisory

7-Zip Security Flaw Allows Malicious File Writes and Potential Exploits 

Summary Security Advisory: 7-Zip Security Flaw

A vulnerability in 7-Zip (versions before 25.01) allows attackers to abuse symbolic links in archive files to write files outside the intended extraction directory.

Severity Low 
CVSS Score 3.6 
CVEs CVE-2025-55188 
POC Available No 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

This can lead to overwriting sensitive files, potentially enabling code execution or privilege escalation. The flaw is primarily exploitable on Linux systems due to common file permission models but can also impact Windows under specific conditions. Affected archive formats include ZIP, TAR, 7Z and RAR. 

The security flaw was  reported and discoverd by security researcher lunbun, who identified that 7-Zip fails to properly validate symbolic links when extracting certain archive formats.

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​ 7-Zip Arbitrary File Write via Symbolic Link Flaw  CVE-2025-55188 7-Zip  Low  25.01 and later. 

Technical Summary 

Cause: Improper validation of symbolic links during archive extraction. 

Attack Vector: Malicious archives can contain symlinks pointing outside the extraction directory. 

Impact: Overwrites arbitrary files on the system. On Linux, this can replace startup scripts, configuration files, or binaries to gain elevated privileges. On Windows, exploitation requires write access to target paths. 

Affected Formats: ZIP, TAR, 7Z, RAR. 

CVE ID CVSS Score System Affected  Vulnerability Details Impact 
CVE-2025-55188 3.6 Linux, Windows 7-Zip versions 7-Zip mishandles symbolic links in archives, letting attackers write files anywhere on the system during extraction. Code execution, Privilege escalation 

Recommendations: 

Here are some recommendations below 

  • Update 7-Zip to version 25.01 or latest one.  
  • Avoid extracting archives from untrusted sources. 
  • Always consider using sandboxed environments for unknown files extraction. 

Conclusion: 
While CVE-2025-55188 carries a low CVSS score, the real-world impact can be severe in certain environments, especially on Linux systems with high-privilege extraction processes.

Immediate patching to 7-Zip 25.01 or later is strongly advised to mitigate the risk of arbitrary file overwrite attacks. 

The researcher has submitted a request for reevaluation of the CVSS score and offered to provide proof-of-concept demonstrations to package repository maintainers who require additional verification.

References: 

Security Advisory

WinRAR Zero-Day Path Traversal Flaw Actively Exploited to Code Execution 

Security advisory: A zero-day path traversal vulnerability has been discovered in the Windows version of a popular file archiver utility, WinRAR. The vulnerability tracked as CVE-2025-8088, affects multiple Windows-based WinRAR an components, which has already been exploited in the wild.

Severity High 
CVSS Score 8.4 
CVEs CVE-2025-8088 
POC Available Yes 
Actively Exploited Yes 
Exploited in Wild Yes 
Advisory Version 1.0 

Overview 
This flaw allows attackers to manipulate the extraction path of files from a malicious archive, enabling them to place arbitrary code file in sensitive system folders, overwrite important files and even execute malicious code immediately upon extraction. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
Path Traversal Vulnerability   CVE-2025-8088  WinRAR (Windows versions), RAR, UnRAR, portable UnRAR (Windows), UnRAR.dll 8.4  WinRAR 7.13 

Technical Summary 

When extracting files, vulnerable versions of WinRAR could be tricked into using a maliciously crafted file path embedded inside an archive rather than the user’s intended extraction directory. This occurs when the extraction process fails to properly validate and sanitize file paths before writing them to disk. 
As a result, attackers can: 

  • Place malicious files in protected system directories. 
  • Overwrite critical system/application files. 
  • Trigger automatic execution of malware without further user action. 

Most common attack vector involves sending a malicious archive via phishing or other social engineering techniques. When opened with a vulnerable WinRAR version, the malware is silently deployed and executed. 

Unix versions of RAR, UnRAR, UnRAR library, RAR for Android are not affected for this vulnerability. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-8088 WinRAR and related components on Windows version (RAR, UnRAR, portable UnRAR, UnRAR.dll) Flawed extraction path handling allows files to be placed outside the intended extraction directory. Allows arbitrary file placement, overwriting critical files, and executing malicious code without user interaction. 

Recommendations: 

Here are the recommendations below you can follow 

  • Update immediately to WinRAR 7.13 or newer version from the official WinRAR website. 
  • Avoid extracting archives from untrusted or unknown sources. 
  • Enable endpoint protection and ensure it scans archives before extraction. 
  • Audit your system for unusual or unauthorized files in system directories. 

Conclusion: 
CVE-2025-8088 shows that even widely trusted tools like WinRAR can become high-risk targets when flaws allow silent malware deployment during normal usage. Given that this zero-day has already been exploited, updating to WinRAR 7.13 immediately is crucial. Additionally, users should avoid extracting files from unknown sources and maintain strong endpoint protection. 

References: 

Security Advisory

Zero-Day Exploitation in SonicWall Targeted by Akira Ransomware 

Summary 

A critical zero-day vulnerability is suspected in SonicWall SSL VPN appliances, which are currently being actively exploited by threat actors linked to the Akira ransomware group. These attacks began last month and exploit even fully patched devices and systems with multi-factor authentication (MFA) enabled. In many cases, attackers move quickly, encrypting victim systems within hours of gaining access. 

Detailed Observation 

The ongoing attacks targeting SonicWall SSL VPN appliances suggest the presence of a zero-day vulnerability that allows threat actors to gain unauthorized access to enterprise networks.

This exploitation may be limited to TZ and NSa-series SonicWall firewalls with SSLVPN enabled. The attack patterns indicate that the attackers may be exploiting a flaw in the VPN’s authentication or session management mechanisms which they can be able to bypass the MFA.

Security researchers also observed that the threat actors often used legitimate credentials, including recently rotated passwords, implying either credential theft or session hijacking.

These login attempts were traced back to Virtual Private Servers (VPS), a common tactic to obscure the attacker’s origin. Once threat actors on the network, they abuse the privileged accounts, then start establishing C2 and move laterally in the network, then at the last stage before deploying the ransomware they are disabling the defenses to smooth deploy.

The ransomware group suggests Akira, has been seen deploying malware and encrypting data within hours, showcasing a high level of automation and operational efficiency.

The pattern and speed of these attacks point to a well-orchestrated campaign that likely began months earlier (as early as October 2024) but surged in mid-July 2025. This level of sophistication, combined with the failure of traditional defenses, strongly supports the theory that attackers are leveraging an undisclosed vulnerability in SonicWall’s SSL VPN stack. 

Remediation: 

Until an official SonicWall patch is released, organizations should take the following immediate actions: 

  • Disable SonicWall SSL VPN if possible, especially for external access. 
  • Enforce network segmentation to limit the radius of any potential breach. 
  • Monitor access logs for suspicious login attempts (especially from VPS-hosting IP ranges). 
  • Block known malicious IPs and ASNs used in previous attacks. 
  • Rotate all VPN credentials, especially for admin or privileged users. 
  • Harden MFA configuration (though current evidence shows bypasses are possible). 
  • Enable IP reputation and botnet protection features in SonicWall firewalls. 
  • Audit all VPN user accounts, removing any inactive or unnecessary ones. 

IOCs 

Attacker IP Threat Actors used tools ASN/CIDR hosting adversary infrastructure User & Password created  
42.252.99[.]59 w.exe AS24863 – LINK-NET – 45.242.96.0/22 backupSQL (U) 
45.86.208[.]240 win.exe AS62240 – Clouvider – 45.86.208.0/22 lockadmin (U) 
77.247.126[.]239 C:\ProgramData\winrar.exe AS62240 – Clouvider – 77.247.126.0/24 Password123$ (P) 
104.238.205[.]105 C:\ProgramData\OpenSSHa.msi AS23470 – ReliableSite LLC – 104.238.204.0/22 Msnc?42da (P) 
104.238.220[.]216 C:\Program Files\OpenSSH\sshd.exe AS23470 – ReliableSite LLC – 104.238.220.0/22 VRT83g$%ce (P) 
181.215.182[.]64 C:\programdata\ssh\cloudflared.exe AS174 – COGENT-174 – 181.215.182.0/24  
193.163.194[.]7 C:\Program Files\FileZilla FTP Client\fzsftp.exe AS62240 – Clouvider – 193.163.194.0/24  
193.239.236[.]149 C:\ProgramData\1.bat AS62240 – Clouvider – 193.239.236.0/23  
194.33.45[.]155 C:\ProgramData\2.bat AS62240 – Clouvider – 194.33.45.0/24  
  • Source: huntress.com 

Conclusion: 
The exploitation of a suspected zero-day in SonicWall SSL VPN poses an immediate and critical threat to enterprise environments.

The ability of attackers to bypass authentication and deploy ransomware within hours is highly dangerous and points to a sophisticated, active campaign.

Organizations using SonicWall VPNs must take preemptive steps now, including disabling VPN access if feasible and aggressively monitoring for anomalies, until SonicWall releases a formal patch or mitigation advisory 

References: 

Uncategorized

Patch Now! Claude Code Vulnerabilities Allow Unauthorized Command Execution, CVEs Affect AI Security Foundations 

Summary 

Anthropic’s Claude Code gained traction as a powerful AI coding assistant and promises developers a safe and streamlined way to build with Claude’s capabilities. But recently two high-severity vulnerabilities have been discovered in Claude Code, Anthropic’s AI-powered coding assistant. These flaws allow attackers to escape security restrictions and execute arbitrary system commands.

AI coding assistant was meant to enforce restrictions but unknowingly reveals how to bypass them. Threat researchers from Cymulate discovered two high-severity vulnerabilities in Claude Code, which were quickly addressed by the team.

These issues allowed me to escape its intended restrictions and execute unauthorized actions, all with Claude’s own help.

Severity High 
CVSS Score 8.7 
CVEs CVE-2025-54794, CVE-2025-54795 
POC Available Yes 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 
Notably, Claude’s own feedback mechanisms were leveraged by attackers to refine and optimize their payloads. 

These CVEs highlight how generative AI tools can be manipulated into aiding exploitation attempts, demonstrating the risks of integrating AI into secure development workflows. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
Path Restriction Bypass  CVE-2025-54794  Claude Code < v0.2.111 7.7  v0.2.111 
Command Injection CVE-2025-54795 Claude Code < v1.0.20 8.7 v1.0.20 

Technical Summary 

CVE-2025-54794 – Directory Restriction Bypass  

Claude Code tried to keep file access safe by only allowing work in certain folders. But it used a weak method to check file paths it just checked if the file name started with an allowed folder name. An attacker could create a folder with a similar name (like /tmp/allowed_dir_malicious) and trick Claude into thinking it was safe.

This could allow attackers to reach outside the safe folder, read secret files or even access system settings. Using symbolic links, attackers could also jump to important files that should never be touched. 

CVE-2025-54795 – Command Injection 

Claude only allows certain commands, like echo or ls, to run. But there was a mistake in how it cleaned user input. Attackers could hide harmful commands inside allowed ones. Example – echo “\”; <MALICIOUS_COMMAND>; echo \”” tricks Claude into running the attacker’s command between two harmless echo commands. 

Even worse, Claude helped improve these attack attempts. When a try failed, the attacker asked Claude why it didn’t work. Claude explained the problem and suggested fixes leading to successful attacks. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-54794 Claude Code versions below v0.2.111 Claude used a weak prefix matching to check if files were inside a safe folder. Attackers could create folders with similar names to bypass these checks. Attackers can escape the sandbox, access sensitive files, and potentially escalate system privileges. 
CVE-2025-54795 Claude Code versions below v1.0.20 Claude allowed only safe commands, but input was not cleaned properly. Attackers could hide malicious commands inside allowed ones like echo. Attackers can run harmful commands, open applications, and possibly install malware or backdoors. 

POC Available: 

This vulnerability exploits a weakness in how Claude handles whitelisted command strings. Improper input sanitization allows attackers to inject arbitrary shell commands using echo, bypassing any user prompt or approval. 

  1. Exploitation Steps (PoC) 

Step 1 – Try a basic payload 

echo “test”; ls -la ../restricted (This gets flagged by Claude, and it asks for user confirmation) 

Step 2 – Refined working payload: 

echo “\”; ls -la ../restricted; echo \”” 

Claude executes this without a prompt. 

Lists a directory (../restricted) outside the current working directory, which should not be accessible. 

Step 3 – Execute arbitrary system command (e.g., launch Calculator) 

echo “\”; open -a Calculator; echo \”” 

This launches the Calculator app without any user approval. 

  1. Why Did This Work? 
  1. Improper Input Escaping: 
    Claude Code embeds user input into echo “<input>“ but doesn’t properly sanitize or escape the contents. 
  1. Payload Explains the Exploit: 
  • echo “\”; → closes the initial string 
  • COMMAND → injects and executes arbitrary command 
  • ; echo \”” → reopens the string to make it appear valid 
  • Claude sees this as just another harmless echo command 
  • Since echo is whitelisted, it runs automatically 
  • The attacker’s payload slips through the gap and executes 
  • If the Claude Code is running with higher privileges, attackers can perform Local Privilege Escalation (LPE) 

Remediation: 

  • Update immediately Claude   

For CVE-2025-54794 → Update to v0.2.111 or later 

For CVE-2025-54795 → Update to v1.0.20 or later 

  • Check logs and systems where Claude was used for suspicious behavior.  
  • Don’t allow untrusted files or user input into Claude’s coding environment. 

Conclusion: 
These vulnerabilities highlight a growing concern in AI-assisted development, the AI’s ability to assist malicious users. Claude Code not only allowed abuse through technical flaws, but also helped attackers refine and improve their exploitation strategy. 

Organizations leveraging AI in development pipelines must apply the same rigor used for traditional tools, enforce strict input validation, isolate environments and assume AI can be misled or exploited. 

Anthropic’s security and engineering teams has been fast with their professional response and smooth coordination during disclosure.

References: 

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