Patch managament

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

Apache Parquet Java Vulnerability Enables Remote Code Execution via Avro Schema 

Summary Security Advisory:

A high-severity remote code execution (RCE) has been identified in Apache Parquet Java, specifically within the parquet-avro module. Discovered by Apache contributor Gang Wu, this vulnerability affects all versions up to and including 1.15.1 and can allow attackers to execute arbitrary code when a system processes a specially crafted Parquet file. The issue is fixed in version 1.15.2. 

OEM Apache 
Severity High 
CVSS Score Not Available 
CVEs CVE-2025-46762 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview 

Apache Parquet is an open-source, columnar storage format designed for efficient data processing, widely used by big data platforms and organizations engaged in data engineering and analytics.

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​Remote Code Execution vulnerability  CVE-2025-46762 Apache Parquet Java  High  1.15.2 

Technical Summary 

CVE-2025-46762 arises from insecure schema parsing logic in the parquet-avro module of Apache Parquet Java. When the application uses the “specific” or “reflect” Avro data models to read a Parquet file, malicious actors can inject specially crafted metadata into the Avro schema portion of the file.

Upon deserialization, the system may inadvertently execute code from Java classes listed in the default trusted packages (e.g., java.util), resulting in remote code execution. The vulnerability is not present when using the safer “generic” Avro model. 

CVE ID System Affected Vulnerability Details Impact 
  CVE-2025-46762  Apache Parquet Java ≤1.15.1 Insecure deserialization in the parquet-avro module allows execution of arbitrary Java classes when processing Parquet files with embedded malicious Avro schemas. The issue is exploitable only when using the “specific” or “reflect” data models, and relies on the presence of pre-approved trusted packages like java.util.  Remote Code Execution (RCE), potential supply chain compromise, unauthorized code execution. 

Conditions for Exploitation: 

  • Applications must use parquet-avro to read Parquet files. 
  • The Avro “specific” or “reflect” deserialization models are used (not “generic”). 
  • Attacker-supplied or untrusted Parquet files are processed by the system. 

This creates significant risk in data processing environments such as Apache Spark, Flink, and Hadoop, where external Parquet files are commonly ingested. 

Remediation: 

  • Upgrade to Apache Parquet Java version 1.15.2: This version addresses the vulnerability by tightening controls around trusted packages and blocking unsafe deserialization. 
  • For users unable to upgrade immediately: apply the following JVM system property to disable trusted package deserialization: 

-Dorg.apache.parquet.avro.SERIALIZABLE_PACKAGES=”” 

Conclusion: 
CVE-2025-46762 presents a significant RCE threat within big data ecosystems that use Apache Parquet Java with the parquet-avro module. Systems relying on unsafe deserialization patterns are especially at risk. Prompt patching or configuration hardening is strongly recommended to safeguard against exploitation. 

References: 

Scroll to top