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Vulnerability record · CVE-2025-13015 · published 11 November 2025

CVE-2025-13015: Mozilla firefox authentication bypass by spoofing vulnerability

Mozilla · Firefox

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

3.4 CVSS 3.1 Low EPSS 0.26% · top 83.8% CWE-290 · Authentication bypass by spoofing
3.4CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=1994164 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-87/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-88/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-89/ Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-13015), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.