CVE-2025-13012

HIGH

Published Nov 11, 2025 Modified Apr 13, 2026 CWE-362

Description

Race condition in the Graphics component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
mozilla	firefox	< 115.30.0
mozilla	firefox	< 145.0
mozilla	firefox	140.0 — 140.5.0

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2025-87/ https://www.mozilla.org/security/advisories/mfsa2025-88/ https://www.mozilla.org/security/advisories/mfsa2025-89/

Other References

https://bugzilla.mozilla.org/show_bug.cgi?id=1991458 https://www.mozilla.org/security/advisories/mfsa2025-90/ https://www.mozilla.org/security/advisories/mfsa2025-91/

Frequently Asked Questions

What is CVE-2025-13012? +

Race condition in the Graphics component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-13012? +

CVE-2025-13012 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-13012? +

CVE-2025-13012 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-2025-13012? +

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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