CVE-2025-13042
📋 TL;DR
This vulnerability allows remote attackers to potentially exploit heap corruption in Google Chrome's V8 JavaScript engine via a crafted HTML page. Attackers could execute arbitrary code or cause denial of service. All users running vulnerable versions of Chrome are affected.
💻 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 →⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data theft, or ransomware deployment.
Likely Case
Browser crash (denial of service) or limited code execution within browser sandbox.
If Mitigated
Browser crash with no data loss if sandbox holds, but potential for sandbox escape exists.
🎯 Exploit Status
Exploitation requires crafting specific JavaScript to trigger heap corruption. No public exploits known yet, but high CVSS suggests reliable exploitation is feasible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 142.0.7444.166
Vendor Advisory: https://chromereleases.googleblog.com/2025/11/stable-channel-update-for-desktop_11.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 update. 4. Click 'Relaunch' to restart Chrome with updated version.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents exploitation by blocking JavaScript execution, but breaks most websites.
chrome://settings/content/javascript → Block
Use Site Isolation
allEnforces process separation between sites to limit impact if exploited.
chrome://flags/#site-isolation-trial-opt-out → Disabled
🧯 If You Can't Patch
- Restrict browser use to trusted websites only
- Implement application allowlisting to block Chrome execution
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in About Google Chrome page. If version is below 142.0.7444.166, system is vulnerable.Check Version:
On Windows: "chrome://version/" in address bar. On Linux/macOS: google-chrome --versionVerify Fix Applied:
Confirm Chrome version is 142.0.7444.166 or higher in About Google Chrome page.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with V8-related errors
- Unexpected browser process termination
Network Indicators:
- Requests to known malicious domains serving crafted HTML
- Unusual outbound connections after visiting suspicious sites
SIEM Query:
source="chrome_logs" AND (event="crash" OR error="V8")