CVE-2025-13639
📋 TL;DR
This vulnerability in Chrome's WebRTC implementation allows attackers to perform arbitrary read/write operations via a crafted HTML page. It affects users running vulnerable versions of Google Chrome, potentially enabling data manipulation or theft. The severity is rated Low by Chromium but has a high CVSS score of 8.1.
💻 Affected Systems
- Google Chrome
- Chromium-based browsers
📦 What is this software?
Chrome by Google
Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...
Learn more about Chrome →Chrome by Google
Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...
Learn more about Chrome →⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of browser session including reading sensitive data from memory, writing malicious content, and potential privilege escalation within the browser context.
Likely Case
Data theft from browser memory, session hijacking, or manipulation of web page content without user interaction.
If Mitigated
Limited impact due to browser sandboxing and same-origin policy restrictions, though some data exposure may still occur.
🎯 Exploit Status
Exploitation requires user to visit a malicious website but doesn't require authentication or user interaction beyond initial page load.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 143.0.7499.41 and later
Vendor Advisory: https://chromereleases.googleblog.com/2025/12/stable-channel-update-for-desktop.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for and install updates. 4. Click 'Relaunch' to restart Chrome with the patched version.
🔧 Temporary Workarounds
Disable WebRTC
allTemporarily disable WebRTC functionality which may break video conferencing and real-time communication features
chrome://flags/#disable-webrtc
Set to 'Disabled'
🧯 If You Can't Patch
- Use alternative browsers without WebRTC vulnerabilities
- Implement network filtering to block malicious websites and restrict browser usage to trusted sites only
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: If version is less than 143.0.7499.41, system is vulnerableCheck Version:
google-chrome --version (Linux/Mac) or navigate to chrome://versionVerify Fix Applied:
Confirm Chrome version is 143.0.7499.41 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual WebRTC API calls
- Multiple failed WebRTC connection attempts
- Memory access violations in Chrome logs
Network Indicators:
- Suspicious WebRTC STUN/TURN traffic patterns
- Unexpected data channels to untrusted domains
SIEM Query:
source="chrome_logs" AND (webrtc OR "CVE-2025-13639") AND severity=HIGH