CVE-2025-12443
📋 TL;DR
This vulnerability allows a remote attacker to read memory outside the intended buffer boundaries in Chrome's WebXR implementation. Attackers could potentially leak sensitive information from browser memory by tricking users into visiting a malicious webpage. All Chrome users on vulnerable versions 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
Information disclosure leading to exposure of sensitive data from browser memory, potentially including authentication tokens, session cookies, or other user data.
Likely Case
Limited information disclosure from browser memory, potentially revealing non-sensitive data or causing browser instability/crashes.
If Mitigated
No impact if Chrome is updated to patched version or if WebXR is disabled.
🎯 Exploit Status
Exploitation requires crafting a malicious HTML page with WebXR content. No authentication needed to trigger the vulnerability.
🛠️ 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 three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for and install updates. 4. Click 'Relaunch' to restart Chrome with the update.
🔧 Temporary Workarounds
Disable WebXR
allDisable the WebXR API to prevent exploitation
chrome://flags/#webxr
Set 'WebXR' to 'Disabled'
🧯 If You Can't Patch
- Use alternative browsers without WebXR support
- Implement web filtering to block malicious sites
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in Settings → About Chrome. If version is below 142.0.7444.59, system is vulnerable.Check Version:
chrome://version/Verify Fix Applied:
Verify Chrome version is 142.0.7444.59 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports
- Memory access violation logs
Network Indicators:
- Requests to suspicious domains with WebXR-related parameters
SIEM Query:
source="chrome" AND (event="crash" OR event="memory_violation") AND version<"142.0.7444.59"