CVE-2025-12428
📋 TL;DR
A type confusion vulnerability in Chrome's V8 JavaScript engine allows attackers to perform arbitrary memory read/write operations through a malicious HTML page. This affects all users running vulnerable versions of Google Chrome, potentially leading to remote code execution.
💻 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
Full remote code execution with system compromise, data theft, and lateral movement within the network.
Likely Case
Browser compromise leading to session hijacking, credential theft, and installation of malware or backdoors.
If Mitigated
Limited impact if browser sandboxing works correctly, potentially only browser crash or limited memory corruption.
🎯 Exploit Status
Exploitation requires user to visit a malicious website. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 142.0.7444.59
Vendor Advisory: https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.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 JavaScript
allTemporarily disable JavaScript execution in Chrome to prevent exploitation
chrome://settings/content/javascript → Block
Use Site Isolation
allEnable Site Isolation to limit impact of memory corruption
chrome://flags/#enable-site-per-process → Enable
🧯 If You Can't Patch
- Use alternative browsers until Chrome can be updated
- Implement network filtering to block known malicious domains
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in About Google Chrome pageCheck Version:
google-chrome --version (Linux) or chrome://versionVerify Fix Applied:
Verify Chrome version is 142.0.7444.59 or later📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with V8-related errors
- Unusual memory access patterns in process monitoring
Network Indicators:
- Requests to suspicious domains with crafted JavaScript payloads
SIEM Query:
source="chrome_crash_reports" AND (message="V8" OR message="type confusion")