CVE-2025-5283 Overview
CVE-2025-5283 is a use after free vulnerability in the libvpx video codec library within Google Chrome prior to version 137.0.7151.55. This memory corruption flaw allows a remote attacker to potentially exploit heap corruption through a crafted HTML page. The vulnerability exists in the VP8/VP9 video decoding component, which is widely used for media playback in the browser.
Critical Impact
Remote attackers can potentially achieve heap corruption by luring victims to visit malicious web pages containing specially crafted video content, leading to potential code execution or browser compromise.
Affected Products
- Google Chrome versions prior to 137.0.7151.55
- Chromium-based browsers using vulnerable libvpx versions
- Debian distributions with affected Chromium packages
Discovery Timeline
- May 27, 2025 - CVE-2025-5283 published to NVD
- November 3, 2025 - Last updated in NVD database
Technical Details for CVE-2025-5283
Vulnerability Analysis
This use after free vulnerability (CWE-416) occurs in the libvpx library, an open-source codec implementation for VP8 and VP9 video formats. Use after free vulnerabilities arise when a program continues to reference memory after it has been freed, potentially allowing an attacker to manipulate the freed memory region and achieve arbitrary code execution or information disclosure.
The vulnerability can be triggered through network-based attacks requiring user interaction—specifically, when a victim visits a malicious webpage containing crafted video content. The attack leverages the browser's media rendering pipeline, where improper memory management in libvpx during video decoding operations creates an exploitable condition.
When processing specially crafted video data, the decoder may access memory that has already been deallocated, leading to heap corruption. This corruption can potentially be leveraged to overwrite critical data structures, redirect execution flow, or leak sensitive information from memory.
Root Cause
The root cause stems from improper memory lifecycle management within the libvpx video decoding routines. When processing certain malformed or specially crafted video frames, the decoder fails to properly track memory allocations and deallocations, resulting in references to freed heap memory being retained and subsequently accessed during video processing operations.
Attack Vector
The attack vector is network-based, requiring user interaction to visit a malicious webpage. An attacker would need to:
- Craft a malicious HTML page containing specially constructed VP8/VP9 video content
- Host the page on a web server or inject it into a compromised website
- Lure victims to visit the page through social engineering or other means
- The browser's media decoder processes the malicious video, triggering the use after free condition
The vulnerability manifests during video frame processing in the libvpx decoder. When the crafted video data is parsed, improper memory handling causes the decoder to reference previously freed heap allocations, leading to potential heap corruption. Technical details are available in the Chromium Issue Tracker Entry.
Detection Methods for CVE-2025-5283
Indicators of Compromise
- Unexpected Chrome browser crashes during video playback on untrusted websites
- Memory corruption errors or heap corruption warnings in browser crash logs
- Unusual Chrome renderer process behavior when loading media-heavy pages
- Browser crashes with libvpx or video decoding related stack traces
Detection Strategies
- Monitor for Chrome crash reports referencing libvpx, VP8, or VP9 decoding components
- Implement browser version monitoring to identify outdated Chrome installations (versions prior to 137.0.7151.55)
- Deploy endpoint detection solutions capable of identifying heap corruption exploitation attempts
- Analyze network traffic for suspicious video content delivery patterns targeting browsers
Monitoring Recommendations
- Configure centralized logging for browser crash reports across endpoints
- Implement automated Chrome version compliance checking in enterprise environments
- Deploy SentinelOne agents to detect anomalous browser process behavior indicative of memory corruption exploitation
- Monitor for unusual child process spawning from Chrome renderer processes
How to Mitigate CVE-2025-5283
Immediate Actions Required
- Update Google Chrome to version 137.0.7151.55 or later immediately
- Enable automatic Chrome updates to ensure timely patch deployment
- Advise users to avoid visiting untrusted websites until patches are applied
- Consider temporarily disabling VP8/VP9 video codecs if updates cannot be immediately deployed
Patch Information
Google has released a security update addressing this vulnerability in Chrome version 137.0.7151.55. The fix is included in the stable channel update released on May 27, 2025. Organizations should prioritize deploying this update across all managed Chrome installations.
For detailed patch information, refer to the Google Chrome Update Announcement.
Debian users should consult the relevant Debian LTS Security Advisory for distribution-specific patching guidance.
Workarounds
- Restrict access to untrusted websites through web filtering or proxy controls
- Implement browser isolation technologies for high-risk browsing activities
- Consider using alternative browsers temporarily if Chrome cannot be immediately updated
- Deploy endpoint protection solutions like SentinelOne to detect and block exploitation attempts
# Verify Chrome version (should be 137.0.7151.55 or higher)
google-chrome --version
# On Linux, force Chrome update via package manager (Debian/Ubuntu)
sudo apt update && sudo apt upgrade google-chrome-stable
# Check for vulnerable Chromium packages on Debian
apt list --installed | grep chromium
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
