CVE-2026-2447

HIGH EPSS 36.2%
Published Feb 16, 20264mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Feb 16, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
36.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-122

Affected Products 5

VendorProductVersionRange
mozillafirefox* <115.32.1
mozillafirefox* <147.0.4
mozillafirefox*≥116.0  –  <140.7.1
mozillathunderbird* <140.7.2
mozillathunderbird*≥141.0  –  <147.0.2

References 4

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
    Issue TrackingPermissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2026/02/msg00028.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-10/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-11/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.