Cybersecurity

Security Advisory

Google Addresses Actively Exploited Zero-Day Vulnerability CVE-2025-6558 in Chrome 

Google has issued a critical emergency update for the Chrome browser to address CVE-2025-6558, a zero-day vulnerability that is actively being exploited in the wild. This high-severity flaw exists in Chrome’s ANGLE and GPU components, which are responsible for rendering graphics in the browser.

Summary 

OEM Google 
Severity High 
CVSS Score 8.8 
CVEs CVE-2025-6558 
POC Available No 
Actively Exploited Yes 
Exploited in Wild Yes 
Advisory Version 1.0 

Overview 

Exploitation of this vulnerability could allow attackers to execute malicious code or gain unauthorized access to user systems. The update is being rolled out for Windows, macOS and Linux platforms. 

                Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​Improper Input Validation in ANGLE/GPU Stack vulnerability  CVE-2025-6558 Google Chrome  High (Zero-day)  138.0.7204.157/.158 (Windows/macOS), 138.0.7204.157 (Linux) 

Technical Summary 

CVE-2025-6558 is a high-severity vulnerability caused by improper validation of untrusted input in Chrome’s ANGLE (Almost Native Graphics Layer Engine) and GPU components. These components translate graphics instructions and interact closely with the system’s native APIs.

The flaw was discovered by Google’s Threat Analysis Group (TAG) and is being actively exploited in real-world attacks. If left unpatched, it could enable attackers to compromise the browser rendering process and potentially execute arbitrary code on the user’s device. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-6558 Chrome on Windows, macOS, Linux Untrusted input is incorrectly validated, allowing malicious manipulation of graphics rendering Remote code execution through active exploitation 

Additional Vulnerabilities Patched in This Update 

In addition to the zero-day CVE-2025-6558, Google also addressed two other high-severity vulnerabilities as part of this update: 

  • CVE-2025-7656 – An integer overflow vulnerability in Chrome’s V8 JavaScript engine, which could be exploited to corrupt memory and potentially achieve remote code execution. This flaw was reported by security researcher Shaheen Fazim.  
  • CVE-2025-7657 – A use-after-free vulnerability in the WebRTC (Web Real-Time Communication) component. Improper memory handling in real-time communication features could allow attackers to crash the browser or execute arbitrary code remotely. This issue was reported by researcher jakebiles. 

Remediation: 

  • Users should immediately update Google Chrome to the latest patched version: 
  • Windows & Mac: 138.0.7204.157/.158 
  • Linux: 138.0.7204.157 

Conclusion: 
CVE-2025-6558 highlights the growing complexity of securing browser components such as ANGLE and GPU. With confirmed active exploitation, users and administrators must prioritize this update to prevent potential remote code execution attacks.

Timely patching remains one of the most effective defenses against modern browser-based threats. 

References: 

Security Advisory

CVE-2025-34067: Critical RCE in HikCentral Puts Global Surveillance at Risk, PoC Available 

Summary:  A critical RCE vulnerability has been found in the Hikvision HikCentral security management system, mainly in the apply CT component.

OEM Hikvision 
Severity Critical 
CVSS Score 10.0 
CVEs CVE-2025-34067 
POC Available Yes 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

It helps attackers to take full control of servers that manage security cameras and building systems without user interaction and authentication. The issue comes from a weakness in an old part of the software – Fastjson, a Java library.

Hackers can use this flaw to run harmful code remotely over the network. A PoC to exploit this vulnerability has been published already. 

Vulnerability Name CVE ID Product Affected Severity 
​ Remote Code Execution Vulnerability CVE-2025-34067 HikCentral (applyCT) Critical 

Technical Summary 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-34067 HikCentral  The /bic/ssoService/v1/applyCT endpoint is vulnerable due to the use of an outdated Fastjson library with unsafe auto-type deserialization enabled. Attackers can send malicious JSON payloads containing LDAP references to attacker-controlled Java classes. Remote code execution  

A security flaw exists in the “/bic/ssoService/v1/applyCT” endpoint, which accepts JSON input. This allows attackers to send specially designed data that tricks the system into loading malicious code from an attacker-controlled server.

Since the system processes this data before checking if the user is logged in, even someone without any login credentials can exploit it. If successful, the attacker can run harmful code under the HikCentral service’s permissions. This helped them move through the network, access or control camera feeds, DVRs/NVRs, and other connected systems across the enterprise.Proof of Concept (PoC): 

(Source: PeiQi0 )

Remediation: 

  • Apply Patches: Users should contact HIKVISION support for immediate remediation guidance and apply any security updates or hotfixes provided by the vendor. 
  • Update Fastjson Library: Ensure the Fastjson library is updated to a secure patched version. 

Recommendations: 

  • Configuration Check: If patching isn’t possible, block or redirect all traffic to the “/bic/ssoService/” endpoints – especially on systems that are accessible from the internet. 
  • Network Segmentation: Isolate surveillance and physical security networks from business-critical systems. 
  • Monitoring: Check logs for outbound LDAP traffic, suspicious Java class loads, or unexpected command execution from the HikCentral host. 

Conclusion: 
This vulnerability helps attackers to take full control of the system, Publicly available code makes it easy for attackers to exploit this flaw. Because of the critical risk, it has received the maximum severity score (CVSS 10.0).  

If not fixed, attackers could turn off security cameras, change alarm settings, delete important evidence, and even watch staff movements live. To protect against this threat, it’s urgent to install the latest patch, isolate the system from the internet and closely monitor for suspicious activity. 

References: 

Press Release

IntruceptLabs & Amrita Vishwa Vidyapeetham Signed MoU to Promote Cybersecurity Skilling & Innovation

On May 20, 2025 to promote Cybersecurity Education & Innovation, Intrucept Pvt Ltd & Amrita Vishwa Vidyapeetham signed MoU to promote Cybersecurity Education & Innovation.

The Memorandum of Understanding between Amrita Vishwa Vidyapeetham and Intrucept Private Limited aims to build a strong foundation in cybersecurity among the next gen of talent willing to join the industry.

The two entities will work together to create an educational environment conducive to the development of a wide range of cybersecurity-related competencies. This will create an effective system that beckons young talents for the training and development of the next generation of security professionals.

This partnership, facilitated by the Chennai Campus, will be applicable across all nine campuses of Amrita Vishwa Vidyapeetham. It underscores the commitment of Amrita’s TIFAC-CORE in Cyber Security to nurture the next generation of cybersecurity leaders.

Key Initiatives:

Align Programs with Industry Needs: Explore and implement measures to ensure academic programs meet the comprehensive requirements for data security in the industry.

Collaborative Research: Joint research projects will focus on developing cutting-edge cybersecurity solutions. 

Internships & Placements: Students will gain practical experience and career pathways through internships and placements offered by Intrucept. 

Industry Experts: Intrucept will contribute by hosting guest lectures and workshops on topics like cyber forensics, keeping students and faculty up-to-date with industry best practices. 

Curriculum Alignment: The collaboration will ensure that Amrita’s academic programs meet the evolving cybersecurity needs of the industry. 

Faculty Development: Intrucept will support training and certification programs to enhance the skills of Amrita’s faculty in cybersecurity. 

As the cybersecurity market in India expands, there is a growing need for qualified and highly skilled cybersecurity professionals.

This collaboration aims to empower students with in-demand cybersecurity skills, industry-recognized training, and hands-on experience with real-world cyber threats and protection strategies.

Special thanks and gratitude to representative who facilitated this initiative :

The MoU was formally inked by Shri C Parameswaran, Principal Director, Corporate & Industry Relations, Amrita Vishwa Vidyapeetham, and Shri Satish Krishna, Chief Operating Officer & Co-founder of Intrucept Pvt Ltd. The signing ceremony held at Intrucept, Bangalore was attended by key representatives including Dr. K Venkatesan, Assistant Professor (Cybersecurity); Ms. Bhanumathi KS, Principal Security Advisor, Intrucept; and Mr. Nitin S, Principal Consultant Cybersecurity, Intrucept.

Security Advisory

Mercedes, VW, Skoda Cars at Risk from Critical PerfektBlue Bluetooth Vulnerabilities 

Summary 

Severity High 
CVSS Score 8.0 
CVEs CVE-2024-45431, CVE-2024-45432, CVE-2024-45433, CVE-2024-45434, 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 
Researchers discovered critical Bluetooth flaws, called PerfektBlue, in the OpenSynergy BlueSDK stack used in millions of vehicles. These allow attackers nearby to remotely run malicious code through the infotainment system, potentially accessing GPS, audio and even vehicle controls depending on the car’s design.

Cars from brands like Mercedes-Benz, Volkswagen and Skoda are affected. While patches were released, it is urged to update the systems and stay cautious during Bluetooth pairing to stay protected. 

Vulnerability Name CVE ID Product Affected Severity 
Use-After-Free in AVRCP  CVE-2024-45434 Open Synergy BlueSDK (Bluetooth AVRCP service_ 8.0   
RFCOMM Improper Function Termination CVE-2024-45433 OpenSynergy BlueSDK (Bluetooth RFCOMM protocol) 5.7 
RFCOMM Parameter Misuse CVE-2024-45432 OpenSynergy BlueSDK (Bluetooth RFCOMM protocol) 5.7 
L2CAP Remote CID Validation Flaw CVE-2024-45431 OpenSynergy BlueSDK (Bluetooth L2CAP layer)  3.5 

Technical Summary 

A set of vulnerabilities has been identified in the Bluetooth stack of infotainment systems, affecting core protocols like AVRCP, L2CAP, and RFCOMM. These issues stem from improper memory handling, incorrect parameter usage and flawed validation logic. While some may only cause system instability or crashes, they can be combined in a coordinated attack to bypass defenses, disrupt communication or potentially execute code remotely. Overall, they expose critical weaknesses that could be exploited to compromise the system through crafted Bluetooth traffic. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2024-45434 Vehicles using Open Synergy Blue SDK, including Mercedes-Benz, Volkswagen, Skoda and undisclosed OEM. This vulnerability allows attackers to exploit free memory in the AVRCP service. By sending crafted Bluetooth commands, they can trigger a use-after-free condition, potentially leading to crashes or remote code execution inside the infotainment system. It can be part of a larger attack chain to take over the system. May allow attackers to run remote code on the infotainment system. 
CVE-2024-45433 Automotive systems running Blue SDK’s RFCOMM protocol implementation.  Due to faulty logic in RFCOMM, certain functions may not exist properly. This can cause the system to behave unpredictably, giving attackers a chance to manipulate control flow or trigger crashes. It can be used to stabilize or advance remote attacks on the Bluetooth stack.  May cause system crash or help in running further malicious actions. 
CVE-2024-45432 Vehicles using Open Synergy Blue SDK with Bluetooth RFCOMM services.  This issue involves functions in the RFCOMM protocol being called with wrong parameters. Attackers can exploit this to introduce unexpected behavior or weaken Bluetooth processing. On its own, it may cause a crash, but as part of an exploit chain, it helps attackers gain deeper access. Can create logic errors and make the system unstable. 
CVE-2024-45431 Infotainment systems in vehicles using Open Synergy Blue SDK Bluetooth stack. This flaw stems from incorrect validation of channel IDs in the L2CAP layer. Attackers can send malformed Bluetooth packets that bypass checks, possibly disrupting communication or preparing the system for further exploitation. Though low in severity alone, it can support chained attacks. Could help attackers bypass checks 

Remediation: 

To stay protected from the PerfektBlue vulnerabilities, users should update with the available latest patches provided by the manufacturer ensure once their vehicle’s software is fully updated.  

Here are some best practices below you can follow  

  • Disable Bluetooth when not in use and avoiding unnecessary pairing, especially in public areas, can reduce exposure to potential attacks.  
  • Always verify Bluetooth pairing requests and codes carefully before accepting any connection.  

Conclusion: 
The PerfektBlue flaws show that even car Bluetooth systems can be a way for hackers to attack. If not fixed, these issues can let attackers take control of your car’s infotainment features and maybe more. Timely patching and adopting secure Bluetooth practices are essential to minimize exposure. As vehicles grow increasingly connected, securing their wireless interfaces becomes crucial to maintaining overall system safety and privacy. 

References: 

Security Advisory

SEO Poisoning Campaign Targets IT Admins with Weaponized PuTTY & WinSCP 

SEO poisoning & malvertising campaign Summary 

A sophisticated SEO poisoning and malvertising campaign has been active since early June 2025, targeting IT administrators with Trojanized installers of commonly used tools like PuTTY and WinSCP. 

Attackers are manipulating search engine results and sponsored ads to lead users to fake websites, which deliver backdoored versions of these tools. Arctic Wolf security researchers have uncovered thia malvertising campaign that has been targeting IT professionals since early June 2025.

The malicious campaign leverages search engine manipulation to promote fake download sites that closely mimic legitimate software repositories. 

Technical Summary 

A threat campaign has been leveraging SEO poisoning and malicious advertisements to trick IT professionals into downloading Trojanized versions of PuTTY and WinSCP from fake websites. Once installed, a malware known as Oyster (aka Broomstick) creates persistent access within the victim’s environment, posing a severe risk to enterprise infrastructure. 

This malware establishes persistence by creating a scheduled task that triggers every three minutes, invoking rundll32.exe to execute a malicious DLL named twain_96.dll using the DllRegisterServer export function, a technique commonly used to bypass traditional detection.  

The attackers specifically target IT administrators and system operators due to their elevated privileges, which allows rapid lateral movement, access to sensitive systems such as domain controllers and the potential deployment of additional payloads like ransomware.

The campaign’s effectiveness stems from its exploitation of everyday workflows, especially IT admins’ reliance on search engines to download tools making it both highly targeted and socially engineered for success. 

Element Detail 
Initial Access SEO poisoning and fake sponsored ads redirect users to malicious download sites. 
Malicious Tools Trojanized installers of PuTTY and WinSCP. 
Payload Backdoor malware is known as Oyster/Broomstick. 
Persistence Scheduled Task every 3 minutes executing twain_96.dll using rundll32.exe via DllRegisterServer. 
Target IT admins with elevated privileges (Domain Admins, Server Admins). 
Objective Network penetration, domain controller access, data exfiltration, possible ransomware deployment. 

Malicious Sponsored PuTTY Ad on Bing.       Source: Arcticwolf 

Observed Malicious Domains 

Organizations are urged to block the following domains immediately: 

  • updaterputty[.]com 
  • zephyrhype[.]com 
  • putty[.]run 
  • putty[.]bet 
  • puttyy[.]org 

These domains host fake versions of PuTTY and WinSCP and are actively used in the ongoing campaign. 

Remediation: 

1. Enforce Trusted Software Acquisition Policies 

  • Mandate the use of verified internal software repositories or direct access to official vendor websites. 
  • Where feasible, implement ad-blocking or web filtering to restrict access to software download categories known to be targeted by malvertising. 

2. Strengthen Network and Endpoint Security Controls 

  • Block known malicious domains at firewall and DNS levels. 
  • Continuously monitor endpoints for suspicious behavior, including: 
  • The creation of unauthorized or high frequency scheduled tasks. 
  • DLL execution via rundll32.exe, especially involving non-standard DLLs such as twain_96.dll. 
  • Deploy or enhance EDR/XDR solutions to detect backdoor persistence methods. 

3. User Awareness 

  • Educate IT staff on SEO poisoning and the risks of downloading tools via search results. 

Conclusion: 
By focusing on widely used administrative tools like PuTTY and WinSCP, threat actors are exploiting the trust and habits of IT professionals through convincing social engineering and poisoned search results.

This approach turns essential tools into delivery mechanisms for backdoors and persistent threats, compromising high-privilege users at the core of enterprise infrastructure.  

Organizations must respond decisively by reinforcing endpoint monitoring, tightening software acquisition policies and implementing robust network-level defenses to mitigate the risks posed by this rapidly evolving threat landscape. 

References: 

Security Advisory

Critical Flaws Expose Schneider DCE to Remote Exploits – Patch Now 

Summary : Schneider Electric has found critical security flaws in its EcoStruxure IT Data Center Expert software (version 8.3 and earlier) which allow attackers to run harmful codes, steal data or disrupt data center operations. The EcoStruxure IT Data Center is a scalable monitoring solution for data center equipment. Through the web interface the flaw allows unauthenticated remote code execution when HTTP is enabled, though it is disabled by default.

Severity Critical 
CVSS Score 10.0 
CVEs CVE-2025-50121, CVE-2025-50122, CVE-2025-50123, CVE-2025-50125 
POC Available No 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

The most severe flaw lets attackers execute commands remotely without logging in and other risks include weak password generation and privilege misuse.

Schneider urges users to upgrade to version 9.0. as a priority, if users are unable to update right now, users should secure their systems by limiting access, disabling unused services, using VPNs and security best practices. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​OS Command Injection  CVE-2025-50121 EcoStruxure IT Data Center Expert (DCE)  Critical  v 9.0 
Insufficient Entropy (Weak Root Password Generation)  CVE-2025-50122 EcoStruxure IT Data Center Expert (DCE)  High  v 9.0 
Insufficient Entropy (Weak Root Password Generation) CVE-2025-50123 EcoStruxure IT Data Center Expert (DCE) High v 9.0 
Insufficient Entropy (Weak Root Password Generation)  CVE-2025-50125 EcoStruxure IT Data Center Expert (DCE) High v 9.0 

Technical Summary 

The vulnerabilities have been identified in the system that exposes it to remote takeover, unauthorized access and internal data exposure.

At the core of the risk is a command injection flaw in the web interface, where unsanitized input allows attackers to execute system-level commands without authentication.

Compounding the issue is a weak password generation mechanism that uses low-entropy values, making root credentials easier to predict if installation or update packages are obtained.

Privileged users can also exploit unsafe input handling, specifically in fields like the hostname to inject and execute arbitrary code.

Furthermore, improper validation of internal HTTP requests allows attackers to perform server-side request forgery (SSRF), potentially accessing internal services and sensitive resources without credentials. 

CVE ID CVSS Score System Affected  Vulnerability Details Impact 
CVE-2025-50121 10.0 Web interface Allows unauthenticated attackers to run system commands via malicious folder in web interface. Unauthenticated RCE, full system compromise. 
CVE-2025-50122 8.3 Password generation system Allows unauthenticated attackers to run system commands via malicious folder in web interface. Root access by reverse-engineering password generation, leading to full control. 
CVE-2025-50123 7.2 Server console interface Allows unauthenticated attackers to run system commands via malicious folder in web interface. Arbitrary command execution by privileged users, risking internal misuse or escalation  
CVE-2025-50125 7.2 HTTP request handler Attackers manipulate hidden URLs to access internal services or run code without login. Unauthorized access to internal services, RCE and data exposure. 

In addition to the Critical and High Severity vulnerabilities, Two other medium severity issues were addressed. 

CVE-2025-50124 – Improper Privilege Management (CVSS 6.9) 
This issue allows privilege escalation through a setup script by a user already holding elevated access via the console. 

CVE-2025-6438 – XML External Entity (XXE) Injection (CVSS 6.8) 

 Attackers could exploit SOAP API calls to inject malicious XML entities and gain unauthorized file access. 

Remediation: 

  • Immediately upgrade to EcoStruxure DCE version 9.0 or the latest one to fix critical security flaws. 

Schneider recommends hardening DCE instances per the EcoStruxure IT Data Center Expert Security Handbook and adopting cybersecurity best practices.

Attackers could gain full access, run harmful commands, or steal data. It is strongly advised to update to version 9.0 or apply strict security measures to reduce the risks immediately.

IoT and Evolving Threat landscape

Industrial IoT security threats have evolved from theoretical concerns to active, persistent dangers that target manufacturing operations worldwide.

The convergence of traditional operational technology with modern information technology has created attack vectors that cybercriminals, nation-state actors, and industrial espionage operations actively exploit.

The financial impact of industrial cybersecurity incidents continues to escalate, with the average cost of a manufacturing sector data breach reaching $4.97 million in 2024, not including potential regulatory fines, business interruption losses, and long-term reputation damage. 

The security flaws in Schneider’s EcoStruxure IT Data Center Expert software exposes the dynamic threat landscape that may exist in Industrial IoT .


These vulnerabilities in Schneider Electric’s EcoStruxure DCE can seriously affect system security and data center operations. 

References: 

Security Advisory

CitrixBleed 2: Critical CVE-2025-5777 Vulnerability Under Active Exploitation with Public PoC Available

Summary ; A critical vulnerability identified as CVE-2025-5777 has been discovered in Citrix NetScaler ADC and NetScaler Gateway products configured as Gateway or AAA virtual servers.

The Citrix NetScaler is a networking gadget that delivers application access across distributed enterprise environments.

Originally developed to optimize traffic and improve the performance of web applications, NetScaler has evolved into a comprehensive solution for load balancing, SSL offloading, web application firewalling (WAF), secure remote access, and gateway functionalities such as VPN and ICA proxy for Citrix Virtual Apps and Desktops.

OEM Citrix 
Severity Critical 
CVSS Score 9.3 
CVEs CVE-2025-5777 
POC Available Yes 
Actively Exploited Yes 
Exploited in Wild Yes 
Advisory Version 1.0 

Overview 

This out-of-bounds read flaw enables unauthenticated attackers to leak sensitive memory content, such as session tokens, by sending crafted HTTP POST requests. 

The vulnerability is actively exploited in the wild, with public PoC exploits and scanning tools available. Citrix has released patches, and urgent remediation is strongly recommended. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​ Out-of-bounds read vulnerability  CVE-2025-5777 NetScaler ADC & Gateway  Critical  14.1-43.56,   13.1-58.32, 13.1-FIPS/NDcPP 13.1 37.235, 12.1-FIPS 12.1-55.328 

Technical Summary 

CVE-2025-5777 arises from improper input validation during login requests on affected NetScaler devices. An attacker can exploit the flaw by submitting a malformed authentication request (eg. missing an equal sign in a POST login parameter). This leads the system to read uninitialized memory and leak up to 127 bytes of sensitive data. 

Attackers can extract session tokens and bypass multi-factor authentication (MFA) to hijack legitimate user sessions. 

CVE ID System Affected  Vulnerability Details Impact 
 CVE-2025-5777 NetScaler ADC & Gateway 14.1 < 14.1-43.56 13.1 < 13.1-58.32 13.1-FIPS/NDcPP < 13.1-37.235 12.1-FIPS < 12.1-55.328 EOL: 12.1, 13.0. Insufficient input validation allows attackers to trigger a memory leak via malformed authentication requests. Session hijacking, MFA bypass, unauthorized access 

Proof of Concept (PoC): 

  • Execution Flow 

Attacker submits a malformed HTTP POST to: 

POST /p/u/doAuthentication.do HTTP/1.0 

Host: <NetScaler-IP> 

Content-Length: 5 

Connection: keep-alive 

login  

(Note: the ‘login’ parameter is included without an ‘=’ or value.) * 

  • Memory Leak Trigger 

Due to insufficient input validation, the backend neither initializes nor validates the ‘login’ field. This causes up to 127 bytes of uninitialized stack memory to be included in the XML response ‘<InitialValue>’ tag potentially containing session tokens or sensitive internal data.  

    Source: horizon3 

Remediation: 

  • Immediate Action: Upgrade to the latest fixed versions:  – NetScaler ADC & Gateway 14.1-43.56 or later 
    – NetScaler ADC & Gateway 13.1-58.32 or later 
    – NetScaler ADC 13.1-FIPS/NDcPP 13.1-37.235 or later 
     – NetScaler ADC 12.1-FIPS 12.1-55.328 or later 
     – EOL versions (12.1, 13.0) must be upgraded to supported releases. 

Recommendations: 

  • Session Invalidation: After patching, terminate all active ICA and PCoIP sessions using: 
      kill icaconnection -all 
      kill pcoipConnection -all. 
  • Audit: Review authentication and session logs for suspicious activity, including repeated POST requests and session reuse across unexpected IPs. 
  • Upgrade Legacy Systems: Migrate EOL devices to supported versions as they will not receive security fixes. 

Conclusion: 
CVE-2025-5777 (CitrixBleed 2) represents a critical memory leak vulnerability that is being actively exploited, with working public exploits widely circulated.

Attackers can extract session tokens and take over sessions even with MFA in place. Shodan scans reveal over 50,000 exposed NetScaler instances, with more than 1,200 unpatched as of late June 2025 

Given its severity, public exploitation, and impact, organizations must act immediately to patch vulnerable systems, revoke active sessions, and migrate away from unsupported versions.

This vulnerability echoes the risks of the original CitrixBleed, emphasizing the importance of proactive defense in depth. 

References: 

Hashtags 

#Infosec #CyberSecurity #Critix #NetScaler #SecurityAdvisory #Vulnerabilitymanagement # Patch Management #CISO #CXO #Intrucept  

Security Advisory

Grafana Rolls out Updates on Critical Chromium Vulnerabilities; CVE-2025-6554 a Zero day Vulnerability

Summary : Grafana has issued urgent patches to address multiple high-severity vulnerabilities stemming from underlying flaws in the Chromium V8 JavaScript engine.

OEM Google 
Severity High 
CVSS Score 8.1 
CVEs CVE-2025-6554, CVE-2025-5959, CVE-2025-6191 CVE-2025-6192 
POC Available No 
Actively Exploited Yes 
Exploited in Wild Yes 
Advisory Version 1.0 

Overview 

The most critical of these, CVE-2025-6554, is a zero-day vulnerability that was actively exploited in the wild. Several of these bugs, if unpatched, could allow attackers to execute arbitrary code, perform memory corruption or bypass sandbox protections via malicious HTML content.

Grafana users running affected versions of Image Renderer and Synthetic Monitoring Agent are strongly advised to update immediately. 

                Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​Type Confusion in V8 Engine vulnerability  CVE-2025-6554 Google Chrome  High  138.0.7204.96/.97 (Windows)  
138.0.7204.92/.93 (Mac)  
138.0.7204.96 (Linux) 
Type Confusion in V8 Engine vulnerability CVE-2025-5959 Google Chrome High 137.0.7151.103/.104 (Windows & Mac) 137.0.7151.103 (Linux) 
Integer overflow in V8 Engine vulnerability CVE-2025-6191 Google- Chrome High 137.0.7151.119/.120 (Windows & Mac) 137.0.7151.119 (Linux) 
Use-after-free in Metrics (Profiler) in Google Chrome CVE-2025-6192 Google- Chrome High 137.0.7151.119/.120 (Windows & Mac) 137.0.7151.119 (Linux) 

Technical Summary 

Grafana has patched four high-severity Chromium V8 vulnerabilities in its Image Renderer and Synthetic Monitoring Agent. The most critical, CVE-2025-6554 is a zero-day type confusion bug that was actively exploited. Other flaws include CVE-2025-5959 (remote code execution), CVE-2025-6191 (integer overflow) and CVE-2025-6192 (use-after-free).

Affected versions are Image Renderer < 3.12.9 and Synthetic Monitoring Agent < 0.38.3. Users should update immediately to stay protected. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-6554 Chrome on Windows, macOS, Linux Type confusion in the V8 JavaScript engine allows improper memory handling, leading to code execution  Remote code execution.  Potential system compromise.  
CVE-2025-5959 Chrome on Windows, macOS, Linux Type Confusion in V8 in Google Chrome prior to allowing a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. Remote code execution.  Potential system compromise. 
CVE-2025-6191 Chrome on Windows, macOS, Linux Integer overflows in V8 in Google Chrome prior to allowing a remote attacker to potentially perform out of bounds memory access via a crafted HTML page. Arbitrary code execution. Memory Corruption. 
CVE-2025-6192 Chrome on Windows, macOS, Linux Use after free in Metrics in Google Chrome prior to allowing a remote attacker to potentially exploit heap corruption via a crafted HTML page. Arbitrary code execution.  

Remediation: 

  • Users should immediately update Google Chrome to the latest patched version: 
  • Windows: 138.0.7204.96/.97, 137.0.7151.103/.104, 137.0.7151.119/.120 
  • macOS: 138.0.7204.92/.93, 137.0.7151.103/.104, 137.0.7151.119/.120 
  • Linux: 138.0.7204.96, 137.0.7151.103, 137.0.7151.119 

Other Chromium-based browsers (Edge, Brave, Opera etc.) should also be updated as patches become available from their respective vendors. 

Conclusion: 
The criticality of CVE-2025-6554, CVE-2025-5959, CVE-2025-6191, CVE-2025-6192 in the wild highlights the urgency of applying the latest Chrome security update.

Type confusion vulnerabilities like this can lead to full system compromise and are highly sought-after by cybercriminals. Users and organizations should take immediate action to mitigate potential risks. 

References: 

Security Advisory

Linux Local Privilege Escalation via udisksd and libblockdev (CVE-2025-6019) PoC released 

Summary : A local privilege escalation vulnerability poc has been released, tracked as CVE-2025-6019, discovered in the udisksd daemon and its backend libblockdev library, affecting widely used Linux distributions including Fedora and SUSE.

Severity High 
CVSS Score 7.0 
CVEs CVE-2025-6019 
POC Available Yes 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

CVE-2025-6019 is a local privilege escalation (LPE) vulnerability affecting systems where: 

  • udisksd is installed and running (e.g., Fedora, SUSE) 
  • Users in the allow active group are trusted to execute disk-related actions 
  • libblockdev fails to validate privileged backend operations under unprivileged contexts 

This flaw allows unprivileged users in the “allow_active” group to escalate privileges and execute commands as root by exploiting insecure trust boundaries in D-Bus IPC communication. 

Vulnerability Name CVE ID Product Affected Severity 
​Local Privilege Escalation Vulnerability  CVE-2025-6019 udisksd / libblockdev  High 

Technical Summary 

This vulnerability is triggered when an attacker in the “allow_active” group issues a crafted D-Bus request to the udisksd daemon using tools like udisksctl. Because the daemon improperly relies on group membership alone (without UID validation), it mistakenly grants root-level mount permissions. 

An attacker can exploit this by  

  • Crafting a malicious disk image (like XFS with a SUID-root shell). 
  • Using “udisksctl mount -b /dev/loop0” to mount it as root. 
  • Escalating privileges and compromising the system. 
CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-6019 Fedora, SUSE, and other Linux distros using udisks2/libblockdev Improper user validation in D-Bus authorization allows unprivileged users to perform privileged disk operations.  Local privilege escalation to root 

Remediation: 

Here are the recommendations below 

  • Update “udisks2” and “libblockdev” to the latest versions provided by your distribution. 
  • Audit and restrict membership of the “allow_active” group. 
  • Disable unsafe or legacy D-Bus actions in system services where possible. 

Conclusion: 
CVE-2025-6019 highlights a breakdown in privilege boundary enforcement within a core system component used by many Linux desktop environments.

The availability of a public PoC, combined with the low complexity of exploitation, makes this vulnerability highly dangerous, particularly in multi-user or shared computing environments. 

Organizations must act swiftly to patch vulnerable systems, reassess group-based privilege models and implement stricter D-Bus and Polkit rules to reduce attack surface. 

References: 

Security Advisory

12-Year-Old Sudo Vulnerability & Chroot Flaw Enable Privilege Escalation  

Summary : Security Advisory: Two critical vulnerabilities CVE-2025-32462 and CVE-2025-32463 have been identified in the widely used Sudo utility, enabling local privilege escalation to root. System administrators rely on Sudo to enforce the principle of least privilege and maintain an audit trail of administrative actions.

The flaw, present in Sudo’s codebase for over 12 years, was discovered by Rich Mirch of the Stratascale Cyber Research Unit and affects both stable (v1.9.0–1.9.17) and legacy (v1.8.8–1.8.32) versions of Sudo.

Severity Critical 
CVSS Score 9.3 
CVEs CVE-2025-32463, CVE-2025-32462 
POC Available Yes 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

These flaws affect both legacy and modern versions of Sudo and impact Linux and Unix-like systems, including Ubuntu and macOS. One vulnerability (CVE-2025-32462)remained undiscovered for over 12 years. Both have been fixed in Sudo version 1.9.17p1. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​Chroot Option Arbitrary Code Execution vulnerability  CVE-2025-32463 Sudo  Critical  1.9.17p1 
Host Option Privilege Escalation vulnerability  CVE-2025-32462 Sudo   Low  1.9.17p1 

Technical Summary 

CVE-2025-32463 – Chroot Privilege Escalation via Path Confusion 

Introduced in Sudo version 1.9.14, this vulnerability abuses the –chroot (-R) feature, allowing attackers to run commands as root even if not permitted in the sudoers file.

The flaw arises because Sudo began resolving paths inside the chroot environment before validating permissions. This allowed attackers to trick Sudo into referencing malicious configuration files (e.g., fake /etc/nsswitch.conf) and loading arbitrary shared libraries (e.g.-libnss_/woot1337.so.2) during the privilege escalation process. 

CVE-2025-32462 – Host Option Bypass 

CVE-2025-32462 exploits improper handling of the –host (-h) option in Sudo, allowing users to bypass hostname-based access restrictions and execute commands as root. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-32463 Stable 1.9.0 – 1.9.17  Exploits the -R chroot option to load attacker-controlled shared libraries, leading to root access even when user lacks necessary permissions.  Arbitrary code execution as root 
CVE-2025-32462 Stable 1.9.0 – 1.9.17 Legacy 1.8.8 – 1.8.32  Allows local users to abuse the -h option to bypass Host or Host_Alias restrictions and execute commands as root across unintended systems.  Local privilege escalation to root 

Remediation: 

Upgrade Sudo to version 1.9.17p1 or later or the appropriate patched package version provided by your Linux distribution. 

Conclusion: 
These Sudo vulnerabilities, especially CVE-2025-32463 with a CVSS score of 9.3, represent a serious threat to system integrity. Exploitable without complex tooling and with a public Proof-of-Concept (PoC) already available, this vulnerability underscores the risks posed by long-standing design flaws in foundational system utilities.

Administrators are strongly advised.

Update Sudo to version 1.9.17p1 or later on all systems. Organizations must act swiftly to patch affected systems, audit privileged access, and secure their Sudo configurations.

This incident reinforces the urgent need for continuous security reviews even for the most trusted and widely deployed open-source components and prevent unauthorized privilege escalation on affected systems.

References: 

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