CVE-2025-10531CWE-288

CVE-2025-10531

Medium · published September 16, 2025

CVSS v3.1
5.4
EPSS
0%
Percentile
18.7
In the wild
Unconfirmed
What it is

Mitigation bypass in the Web Compatibility: Tooling component. This vulnerability was fixed in Firefox 143 and Thunderbird 143.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00274 · 18.7th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2025-09-16T17:15Z
Affected products (2)
ProductVersionsFixed in
mozilla/firefox< 143.0143.0
mozilla/thunderbird< 143.0143.0
References (3)
https://bugzilla.mozilla.org/show_bug.cgi?id=1978453 · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-73/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-77/ · [email protected]
EPSS history
Timeline
  • 16 SEP 12:26Z
    Mitigation bypass in the Web Compatibility: Tooling component
    cvelistv5