CVE-2025-13015

LOW

Published Nov 11, 2025 Modified Apr 13, 2026 CWE-290

Description

Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firefox ESR 115.30.

CVSS v3.1 Score

3.4

LOW

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

Weakness Type (CWE)

CWE-290 CWE-290

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=1994164

Frequently Asked Questions

What is CVE-2025-13015? +

Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firefox ESR 115.30. It has a CVSS v3.1 base score of 3.4 (LOW).

How severe is CVE-2025-13015? +

CVE-2025-13015 has a CVSS v3.1 score of 3.4 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-13015? +

CVE-2025-13015 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-2025-13015? +

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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