CVE-2025-14331

MEDIUM EPSS 5.1%
Published Dec 9, 20256mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Dec 9, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

Description

Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CVSS Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
5.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-346

Affected Products 5

VendorProductVersionRange
mozillafirefox* <115.31.0
mozillafirefox* <146.0
mozillafirefox*≥116.0  –  <140.6.0
mozillathunderbird* <140.6.0
mozillathunderbird* <146.0

References 6

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2000218
    Issue TrackingPermissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-92/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-93/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-94/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-95/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-96/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.