CVE-2025-11458
📋 TL;DR
A heap buffer overflow vulnerability in Google Chrome's Sync component allows remote attackers to perform out-of-bounds memory reads via a crafted HTML page. This could potentially lead to information disclosure or be combined with other vulnerabilities for more severe attacks. All users running vulnerable versions of 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 leading to complete system compromise, data theft, or installation of persistent malware.
Likely Case
Information disclosure through memory reads, potential browser crash (denial of service), or sandbox escape when combined with other vulnerabilities.
If Mitigated
Limited impact due to Chrome's sandboxing, with potential for information disclosure but restricted system access.
🎯 Exploit Status
Exploitation requires user interaction (visiting malicious webpage). No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 141.0.7390.65
Vendor Advisory: https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop.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 updated version.
🔧 Temporary Workarounds
Disable Chrome Sync
allTemporarily disable Chrome Sync feature to reduce attack surface
chrome://settings/syncSetup
Use Browser Sandboxing
allRun Chrome in enhanced sandbox mode on supported platforms
--no-sandbox (DO NOT USE - disables security)
--enable-features=RendererCodeIntegrity
🧯 If You Can't Patch
- Use alternative browsers until patch can be applied
- Implement network filtering to block malicious websites and restrict browser usage
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in chrome://settings/help or via 'chrome://version/'Check Version:
google-chrome --version (Linux), 'Get-AppxPackage Microsoft.WindowsStore' (Windows PowerShell for Store version), or check in Chrome settingsVerify Fix Applied:
Confirm Chrome version is 141.0.7390.65 or later📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with memory access violations
- Unexpected Chrome process termination
- Sync-related error messages in Chrome logs
Network Indicators:
- Unusual outbound connections from Chrome processes
- Requests to suspicious domains hosting HTML content
SIEM Query:
source="chrome" AND (event_type="crash" OR message="*overflow*" OR message="*out of bounds*")