CVE-2025-3619
📋 TL;DR
A critical heap buffer overflow vulnerability in Google Chrome's codec processing allows remote attackers to execute arbitrary code or cause denial of service via specially crafted HTML pages. This affects all Chrome users on Windows who haven't updated to the patched version. Attackers can exploit this without user interaction beyond visiting a malicious website.
💻 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 system compromise with remote code execution, allowing attackers to install malware, steal data, or pivot to other systems.
Likely Case
Browser crash (denial of service) or limited code execution within Chrome's sandbox, potentially leading to data theft from browser sessions.
If Mitigated
Browser crash with no data compromise if sandboxing holds, though service disruption still occurs.
🎯 Exploit Status
Exploitation requires user to visit malicious website but no authentication. Heap corruption vulnerabilities require precise memory manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 135.0.7049.95
Vendor Advisory: https://chromereleases.googleblog.com/2025/04/stable-channel-update-for-desktop_15.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 update. 4. Click 'Relaunch' to restart Chrome with updated version.
🔧 Temporary Workarounds
Disable automatic media playback
allPrevents automatic execution of vulnerable codec processing without user interaction
chrome://settings/content/media → Disable 'Autoplay'
Use browser extensions to block scripts
allNoScript or similar extensions can prevent execution of malicious JavaScript that triggers the vulnerability
🧯 If You Can't Patch
- Restrict access to untrusted websites using web filtering or proxy controls
- Implement application whitelisting to prevent unauthorized Chrome execution
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in Settings → About Chrome. If version is below 135.0.7049.95, system is vulnerable.Check Version:
chrome://version/Verify Fix Applied:
Confirm Chrome version is 135.0.7049.95 or higher in About Chrome page.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with heap corruption errors
- Windows Event Logs showing Chrome process termination with access violation codes
Network Indicators:
- Unusual outbound connections from Chrome process post-crash
- Requests to known exploit hosting domains
SIEM Query:
source="chrome_crash_reports" AND (message="heap" OR message="buffer" OR message="overflow")