CVE-2025-13022
📋 TL;DR
A critical vulnerability in Firefox and Thunderbird's WebGPU component allows memory corruption due to incorrect boundary conditions. Attackers can exploit this to execute arbitrary code or cause denial of service. All users running affected versions are at risk.
💻 Affected Systems
- Mozilla Firefox
- Mozilla Thunderbird
📦 What is this software?
Firefox by Mozilla
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Browser/email client crash (denial of service) or limited code execution in sandboxed context.
If Mitigated
Minimal impact if systems are patched, isolated, or have additional security controls.
🎯 Exploit Status
Exploitation requires crafting malicious WebGPU content but no authentication. No public exploits confirmed yet.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firefox 145, Thunderbird 145
Vendor Advisory: https://www.mozilla.org/security/advisories/mfsa2025-87/
Restart Required: Yes
Instructions:
1. Open Firefox/Thunderbird. 2. Go to Settings > Help > About Firefox/Thunderbird. 3. Allow automatic update to version 145. 4. Restart the application.
🔧 Temporary Workarounds
Disable WebGPU
allTemporarily disable the vulnerable WebGPU component.
In Firefox/Thunderbird address bar, type 'about:config', search for 'dom.webgpu.enabled', set to false
🧯 If You Can't Patch
- Restrict access to untrusted websites and email content.
- Use application sandboxing or isolation techniques.
🔍 How to Verify
Check if Vulnerable:
Check application version in About Firefox/Thunderbird. If version is below 145, system is vulnerable.Check Version:
firefox --version (Linux) or check About menu (all platforms)Verify Fix Applied:
Confirm version is 145 or higher in About dialog and verify WebGPU functionality if needed.📡 Detection & Monitoring
Log Indicators:
- Application crashes with WebGPU-related errors
- Unexpected memory access patterns
Network Indicators:
- Requests to known malicious domains hosting WebGPU exploit code
SIEM Query:
source="firefox.log" AND ("WebGPU" OR "gpu-process-crash")