CVE-2025-6558
📋 TL;DR
This vulnerability in Google Chrome's ANGLE and GPU components allows insufficient input validation, enabling a remote attacker to potentially escape the browser sandbox via a malicious HTML page. All users running affected Chrome versions are at risk, particularly those accessing untrusted websites. The high severity rating indicates significant security implications.
💻 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 →Ipados by Apple
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Safari by Apple
Watchos by Apple
Webkitgtk by Webkitgtk
Wpe Webkit by Wpewebkit
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through sandbox escape, allowing attacker to execute arbitrary code with system privileges, install malware, or access sensitive data.
Likely Case
Attacker gains elevated privileges within the browser environment, potentially accessing local files, system resources, or performing further exploitation.
If Mitigated
Limited impact if sandbox containment holds, potentially only browser crash or denial of service.
🎯 Exploit Status
Exploitation requires user to visit malicious website. No public exploit code available at time of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 138.0.7204.157 and later
Vendor Advisory: https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html
Restart Required: Yes
Instructions:
1. Open Chrome browser
2. Click three-dot menu → Help → About Google Chrome
3. Browser will automatically check for and install update
4. Click 'Relaunch' to restart Chrome with updated version
🔧 Temporary Workarounds
Disable GPU acceleration
allTemporarily disable hardware acceleration which may reduce attack surface
chrome://settings/system → Turn off 'Use hardware acceleration when available'
🧯 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 About Google Chrome page. If version is below 138.0.7204.157, system is vulnerable.Check Version:
chrome://version/Verify Fix Applied:
Confirm Chrome version is 138.0.7204.157 or higher in About Google Chrome page.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with GPU process termination
- Unusual Chrome child process creation patterns
- Security event logs showing privilege escalation attempts
Network Indicators:
- HTTP requests to known malicious domains hosting exploit code
- Unusual outbound connections from Chrome processes
SIEM Query:
process_name:"chrome.exe" AND (event_id:1 OR parent_process_name:"chrome.exe") AND command_line:"*--type=gpu-process*"🔗 References
- https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html
- https://issues.chromium.org/issues/427162086
- http://seclists.org/fulldisclosure/2025/Aug/0
- http://seclists.org/fulldisclosure/2025/Jul/30
- http://seclists.org/fulldisclosure/2025/Jul/32
- http://seclists.org/fulldisclosure/2025/Jul/35
- http://seclists.org/fulldisclosure/2025/Jul/37
- http://www.openwall.com/lists/oss-security/2025/08/02/1
- https://lists.debian.org/debian-lts-announce/2025/08/msg00015.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6558
