CVE-2025-12432
📋 TL;DR
A race condition vulnerability in Chrome's V8 JavaScript engine allows remote attackers to potentially exploit heap corruption via a crafted HTML page. This could lead to arbitrary code execution or browser crashes. All users running vulnerable versions of Google 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 with the privileges of the Chrome process, potentially leading to full system compromise if combined with other vulnerabilities or running with elevated privileges.
Likely Case
Browser crash (denial of service) or limited memory corruption leading to information disclosure or sandbox escape in some configurations.
If Mitigated
Browser crash only, with Chrome's sandbox preventing system compromise in default configurations.
🎯 Exploit Status
Race conditions are difficult to exploit reliably, but successful exploitation could bypass Chrome's security mitigations. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 142.0.7444.59 and later
Vendor Advisory: https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click the 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 JavaScript
allPrevents exploitation by disabling JavaScript execution, but breaks most website functionality.
chrome://settings/content/javascript → Block
Use Site Isolation
allEnsure site isolation is enabled to limit impact of potential sandbox escapes.
chrome://flags/#site-isolation-trial-opt-out → Disabled
🧯 If You Can't Patch
- Use alternative browsers until Chrome can be updated
- Implement network filtering to block known malicious sites and ads
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: If version is below 142.0.7444.59, the system is vulnerable.Check Version:
chrome://version (look for 'Google Chrome' version number)Verify Fix Applied:
Verify Chrome version is 142.0.7444.59 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with V8-related errors
- Unexpected Chrome process termination
Network Indicators:
- Requests to known malicious domains serving crafted HTML
- Unusual JavaScript execution patterns
SIEM Query:
source="chrome" AND (event_type="crash" OR error="V8")