CVE-2025-2137

8.8 HIGH

📋 TL;DR

This vulnerability allows a remote attacker to read memory outside the intended buffer in Chrome's V8 JavaScript engine by tricking users into visiting a malicious webpage. It affects all users running vulnerable versions of Google Chrome, potentially leading to information disclosure or system compromise.

💻 Affected Systems

Products:
  • Google Chrome
  • Chromium-based browsers
Versions: All versions prior to 134.0.6998.88
Operating Systems: Windows, macOS, Linux, ChromeOS
Default Config Vulnerable: ⚠️ Yes
Notes: All standard Chrome installations are vulnerable. Extensions or security settings don't mitigate this vulnerability.

📦 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...

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⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to full system compromise, data theft, or installation of persistent malware.

🟠

Likely Case

Information disclosure through memory leaks, potentially exposing sensitive data like passwords, cookies, or session tokens.

🟢

If Mitigated

Limited impact with proper sandboxing and exploit mitigations; potential crash or denial of service.

🌐 Internet-Facing: HIGH - Attackers can exploit via malicious websites without user interaction beyond visiting the page.
🏢 Internal Only: MEDIUM - Internal users could be targeted via phishing or compromised internal websites.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: MEDIUM

Requires crafting specific JavaScript to trigger the out-of-bounds read. No public exploit code available at this time.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 134.0.6998.88 or later

Vendor Advisory: https://chromereleases.googleblog.com/2025/03/stable-channel-update-for-desktop_10.html

Restart Required: Yes

Instructions:

1. Open Chrome. 2. Click the three-dot menu. 3. Go to Help > About Google Chrome. 4. Chrome will automatically check for and install updates. 5. Click 'Relaunch' to restart Chrome with the update.

🔧 Temporary Workarounds

Disable JavaScript

all

Prevents execution of malicious JavaScript that could trigger the vulnerability

Use Site Isolation

all

Enhances Chrome's sandboxing to limit impact of potential exploitation

🧯 If You Can't Patch

  • Restrict access to untrusted websites using web filtering or proxy controls
  • Implement application whitelisting to prevent execution of unknown processes

🔍 How to Verify

Check if Vulnerable:

Check Chrome version in Settings > About Chrome. If version is below 134.0.6998.88, system is vulnerable.

Check Version:

chrome://version/ or 'google-chrome --version' in terminal

Verify Fix Applied:

Confirm Chrome version is 134.0.6998.88 or higher in Settings > About Chrome.

📡 Detection & Monitoring

Log Indicators:

  • Chrome crash reports with V8-related errors
  • Unexpected Chrome process termination

Network Indicators:

  • Unusual outbound connections from Chrome processes
  • Traffic to known malicious domains

SIEM Query:

source="chrome" AND (event_type="crash" OR error="V8")

🔗 References

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