CVE-2025-5958: Google Chrome Use After Free Vulnerability

CVE-2025-5958 Overview

CVE-2025-5958 is a use-after-free vulnerability in the Media component of Google Chrome prior to version 137.0.7151.103. This memory corruption flaw allows a remote attacker to potentially exploit heap corruption via a crafted HTML page, enabling arbitrary code execution in the context of the browser process. Use-after-free vulnerabilities occur when a program continues to use a pointer after the memory it references has been freed, leading to unpredictable behavior including potential code execution.

Critical Impact

Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code, potentially leading to complete system compromise, data theft, or installation of malware through a malicious web page.

Affected Products

• Google Chrome versions prior to 137.0.7151.103
• All platforms running vulnerable Chrome versions (Windows, macOS, Linux)
• Chromium-based browsers using affected versions of the Media component

Discovery Timeline

• June 11, 2025 - CVE-2025-5958 published to NVD
• June 16, 2025 - Last updated in NVD database

Technical Details for CVE-2025-5958

Vulnerability Analysis

This use-after-free vulnerability (CWE-416) resides in the Media component of Google Chrome. The flaw occurs when memory that has been deallocated is subsequently accessed during media processing operations. When a user visits a maliciously crafted webpage, the attacker can trigger conditions that cause the browser to reference freed memory in the heap, potentially allowing the attacker to overwrite critical data structures or redirect execution flow.

The vulnerability requires user interaction—specifically, the victim must visit a malicious webpage containing the crafted HTML content. Once triggered, heap corruption can occur, potentially allowing an attacker to achieve arbitrary code execution within the browser's security context.

Root Cause

The root cause is a use-after-free condition in Chrome's Media component where a memory object is freed but a dangling pointer to that memory remains in use. When this dangling pointer is subsequently dereferenced during media processing, it accesses memory that may have been reallocated for a different purpose, leading to heap corruption. This type of vulnerability often arises from improper object lifecycle management or asynchronous callbacks that access objects after their destruction.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker must host or inject malicious HTML content that targets the vulnerable Media component. The attack scenario typically involves:

1. An attacker crafts a malicious HTML page containing specific media elements designed to trigger the use-after-free condition
2. The victim is lured to visit the malicious page through phishing, malvertising, or compromised websites
3. The browser's Media component processes the crafted content, triggering the memory corruption
4. The attacker leverages the heap corruption to potentially achieve arbitrary code execution

The vulnerability enables heap corruption through a crafted HTML page targeting Chrome's Media component. Technical details of the exploitation mechanism are available in the Chromium Issue Tracker Entry. The attack requires precise timing and memory layout manipulation to successfully redirect execution flow.

Detection Methods for CVE-2025-5958

Indicators of Compromise

• Unexpected browser crashes or instability when visiting certain websites
• Anomalous memory allocation patterns in Chrome's Media component
• Detection of known malicious domains serving crafted media content
• Suspicious JavaScript execution patterns related to media element manipulation

Detection Strategies

• Monitor browser version information across endpoints to identify unpatched Chrome installations below 137.0.7151.103
• Implement web filtering to block access to known malicious domains exploiting this vulnerability
• Deploy endpoint detection rules to identify heap corruption exploitation attempts
• Monitor for abnormal browser process behavior including unexpected memory operations

Monitoring Recommendations

• Enable Chrome's Enhanced Safe Browsing feature to receive real-time protection against malicious sites
• Configure SIEM alerts for Chrome crash events that may indicate exploitation attempts
• Monitor network traffic for connections to suspicious domains serving crafted media content
• Review endpoint logs for unusual Media component activity or resource consumption

How to Mitigate CVE-2025-5958

Immediate Actions Required

• Update Google Chrome to version 137.0.7151.103 or later immediately
• Enable automatic updates in Chrome to ensure timely security patches
• Audit all endpoints for vulnerable Chrome versions and prioritize patching
• Consider temporarily restricting access to untrusted websites on systems that cannot be immediately patched

Patch Information

Google has released a security update in Chrome version 137.0.7151.103 that addresses this vulnerability. The patch corrects the memory management issue in the Media component, preventing the use-after-free condition. Organizations should deploy this update through their standard software update mechanisms or enterprise management tools.

For detailed patch information, refer to the Google Chrome Update Announcement.

Workarounds

• Disable or restrict JavaScript execution using browser extensions for untrusted sites until patching is complete
• Use browser isolation technologies to contain potential exploitation attempts
• Deploy network-level filtering to block known malicious content targeting this vulnerability
• Consider using alternative browsers temporarily on systems where Chrome cannot be immediately updated

# Chrome enterprise update configuration example
# Force Chrome update policy via registry (Windows)
reg add "HKLM\SOFTWARE\Policies\Google\Update" /v AutoUpdateCheckPeriodMinutes /t REG_DWORD /d 60 /f
reg add "HKLM\SOFTWARE\Policies\Google\Update" /v UpdateDefault /t REG_DWORD /d 1 /f

# Verify Chrome version
google-chrome --version
# Expected: Google Chrome 137.0.7151.103 or higher