CVE-2026-2447HIGH 8.8EPSS p36.0%

CVE-2026-2447CVE-2026-2447

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS0.45% probability of exploitation · percentile 36.0% · 2026-06-19T12:03:05Z
Published2026-02-16
Last modified2026-04-13

Underlying weaknesses· 1

CWE-122

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
  2. https://www.mozilla.org/security/advisories/mfsa2026-10/
  3. https://www.mozilla.org/security/advisories/mfsa2026-11/
  4. https://lists.debian.org/debian-lts-announce/2026/02/msg00028.html

1

TypeTargetConfidenceTier
WeaknessHeap-based Buffer Overflowcwe-1220%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.