CVE-2025-11211
📋 TL;DR
This vulnerability allows a remote attacker to read memory outside the intended buffer in Chrome's media component by tricking users into visiting a malicious HTML page. All users running vulnerable versions of Google Chrome are affected. The attacker could potentially access sensitive information from browser memory.
💻 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 read sensitive data from browser memory, potentially extracting authentication tokens, session cookies, or other confidential information, leading to account compromise or data exfiltration.
Likely Case
Information disclosure where an attacker reads random memory contents, potentially exposing some browser state or user data, but not reliably controlling what data is accessed.
If Mitigated
With proper controls like Chrome's sandboxing and site isolation, the impact is limited to the renderer process, preventing system-wide compromise.
🎯 Exploit Status
Exploitation requires user interaction (visiting a malicious page) but no authentication. The vulnerability is in Chrome's media processing code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 141.0.7390.54
Vendor Advisory: https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_30.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click the three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for updates and install version 141.0.7390.54 or later. 4. Click 'Relaunch' to restart Chrome.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents execution of malicious JavaScript that could trigger the vulnerability
chrome://settings/content/javascript → Block
Use Site Isolation
allEnsures each site runs in separate processes to limit impact
chrome://flags/#site-isolation-trial-opt-out → Disabled
🧯 If You Can't Patch
- Restrict browsing to trusted websites only
- Use alternative browser temporarily
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in About Google Chrome page. If version is below 141.0.7390.54, system is vulnerable.Check Version:
chrome://version/Verify Fix Applied:
Confirm Chrome version is 141.0.7390.54 or higher in About Google Chrome page.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with media-related stack traces
- Unexpected memory access violations in system logs
Network Indicators:
- Requests to suspicious domains hosting HTML with media content
- Unusual outbound traffic patterns after visiting web pages
SIEM Query:
source="chrome" AND (event="crash" OR event="exception") AND process="chrome" AND module="media"