CVE-2025-13021

CRITICAL
Published Nov 11, 2025 Modified Apr 13, 2026 CWE-703

Description

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 145 and Thunderbird 145.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-703 CWE-703

Affected Products

Vendor Product
mozilla firefox

References

Frequently Asked Questions

What is CVE-2025-13021? +
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 145 and Thunderbird 145. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2025-13021? +
CVE-2025-13021 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2025-13021? +
CVE-2025-13021 affects products from mozilla, specifically: firefox. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-13021? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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