CVE-2025-10585
📋 TL;DR
A type confusion vulnerability in Chrome's V8 JavaScript engine allows attackers to trigger heap corruption by tricking the browser into misinterpreting object types. This affects all users running vulnerable versions of Google Chrome, potentially leading to remote code execution when visiting malicious websites.
💻 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 full system compromise, allowing attackers to install malware, steal data, or create persistent backdoors on affected systems.
Likely Case
Browser crash leading to denial of service, or limited code execution within the browser sandbox to steal session cookies and credentials.
If Mitigated
Browser crash with no data loss if sandboxing holds, though user may lose unsaved work in browser tabs.
🎯 Exploit Status
CISA has added this to their Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 140.0.7339.185 and later
Vendor Advisory: https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html
Restart Required: Yes
Instructions:
1. Open Chrome and click the three-dot menu. 2. Go to Help > About Google Chrome. 3. Chrome will automatically check for updates and install version 140.0.7339.185 or later. 4. Click 'Relaunch' to restart Chrome with the update applied.
🔧 Temporary Workarounds
Disable JavaScript
allTemporarily disable JavaScript execution in Chrome to prevent exploitation
chrome://settings/content/javascript
Toggle 'Allowed (recommended)' to 'Blocked'
Use Site Isolation
allEnable Site Isolation to contain potential exploitation
chrome://flags/#enable-site-per-process
Set to 'Enabled' and restart
🧯 If You Can't Patch
- Use alternative browsers until Chrome can be updated
- Implement network filtering to block known malicious domains hosting exploit code
🔍 How to Verify
Check if Vulnerable:
Check Chrome version by navigating to chrome://settings/help or clicking Help > About Google ChromeCheck Version:
On Windows: "C:\Program Files\Google\Chrome\Application\chrome.exe" --version
On macOS: /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version
On Linux: google-chrome --versionVerify Fix Applied:
Confirm version is 140.0.7339.185 or higher in About Google Chrome page📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with V8-related errors
- Unexpected Chrome process termination in system logs
- Security event logs showing Chrome accessing unusual memory regions
Network Indicators:
- Chrome connecting to known malicious domains hosting exploit code
- Unusual outbound connections following Chrome crashes
SIEM Query:
source="chrome_crash_reports" AND (message="V8" OR message="heap corruption" OR message="type confusion")