CVE-2025-12440
📋 TL;DR
This vulnerability in Google Chrome's Autofill feature allows a remote attacker to potentially extract sensitive information from browser memory by tricking a user into performing specific UI interactions on a malicious webpage. All users running vulnerable versions of Chrome are affected. The attacker needs user interaction and cannot directly control what data is leaked.
💻 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
An attacker could obtain authentication tokens, passwords, or other sensitive data from browser memory, potentially leading to account compromise or data exposure.
Likely Case
Limited information disclosure of random memory contents, possibly including some autofill data or session information, but with low reliability.
If Mitigated
With updated Chrome and standard security controls, the risk is minimal as the attack requires user interaction and yields unpredictable results.
🎯 Exploit Status
Exploitation requires convincing a user to perform specific UI gestures on a crafted webpage. No authentication is needed, but social engineering is required.
🛠️ 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. 3. Go to Help > About Google Chrome. 4. Chrome will automatically check for and install updates. 5. Click 'Relaunch' to restart Chrome with the update.
🔧 Temporary Workarounds
Disable Autofill
allTemporarily disable Chrome's Autofill feature to prevent exploitation
Use Incognito Mode
allBrowse potentially risky websites in Incognito mode which has limited autofill functionality
🧯 If You Can't Patch
- Use alternative browsers until Chrome can be updated
- Implement strict web filtering to block access to untrusted websites
🔍 How to Verify
Check if Vulnerable:
Check Chrome version by going to chrome://version/ and comparing to vulnerable versionsCheck Version:
chrome://version/Verify Fix Applied:
Verify Chrome version is 142.0.7444.59 or higher in chrome://version/📡 Detection & Monitoring
Log Indicators:
- Unusual autofill-related errors in Chrome logs
- Multiple failed autofill attempts from same source
Network Indicators:
- Traffic to websites with complex UI manipulation patterns
- Suspicious JavaScript loading patterns
SIEM Query:
source="chrome_logs" AND (event="autofill_error" OR event="memory_access_violation")