CVE-2025-0995

8.8 HIGH

📋 TL;DR

This is a use-after-free vulnerability in Chrome's V8 JavaScript engine that allows remote attackers to potentially exploit heap corruption. Attackers can trigger this by tricking users into visiting a malicious HTML page, potentially leading to arbitrary code execution. All users running vulnerable versions of Chrome are affected.

💻 Affected Systems

Products:
  • Google Chrome
  • Chromium-based browsers
Versions: All versions prior to 133.0.6943.98
Operating Systems: Windows, macOS, Linux, ChromeOS
Default Config Vulnerable: ⚠️ Yes
Notes: All default configurations are vulnerable. Extensions or security settings do not 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 with the same privileges as the Chrome process, potentially leading to full system compromise, data theft, or ransomware deployment.

🟠

Likely Case

Browser crash (denial of service) or limited code execution within the sandboxed Chrome process, potentially enabling further exploitation.

🟢

If Mitigated

Browser crash with no data loss if sandboxing holds, or successful blocking by security controls before exploitation.

🌐 Internet-Facing: HIGH - Attackers can host malicious pages on the internet and trick users into visiting them.
🏢 Internal Only: MEDIUM - Risk exists if internal users visit malicious internal sites, but external attack surface is reduced.

🎯 Exploit Status

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

Exploitation requires user interaction (visiting malicious page) and bypassing Chrome's sandbox and other security mitigations.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 133.0.6943.98 and later

Vendor Advisory: https://chromereleases.googleblog.com/2025/02/stable-channel-update-for-desktop_12.html

Restart Required: No

Instructions:

1. Open Chrome. 2. Click the three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for and apply the update. 4. Relaunch Chrome if prompted.

🔧 Temporary Workarounds

Disable JavaScript

all

Prevents execution of JavaScript that could trigger the vulnerability

Use Site Isolation

all

Enables Chrome's Site Isolation feature to limit impact

🧯 If You Can't Patch

  • Deploy web application firewall rules to block suspicious JavaScript patterns
  • Implement network segmentation to limit browser access to critical systems

🔍 How to Verify

Check if Vulnerable:

Check Chrome version in Settings → About Chrome. If version is below 133.0.6943.98, system is vulnerable.

Check Version:

On Windows: "chrome://version/" in address bar. On macOS/Linux: google-chrome --version

Verify Fix Applied:

Confirm Chrome version is 133.0.6943.98 or higher in Settings → About Chrome.

📡 Detection & Monitoring

Log Indicators:

  • Chrome crash reports with V8-related stack traces
  • Unexpected Chrome process termination events

Network Indicators:

  • Outbound connections to known malicious domains after visiting suspicious pages
  • Unusual JavaScript execution patterns

SIEM Query:

source="chrome_logs" AND (event="crash" OR event="process_termination") AND process="chrome"

🔗 References

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