CVE-2026-2447
Heap buffer overflow in libvpx
- State
- Published
- Severity
- 8.8 High
- Published
- Feb 16, 2026
- Updated
- Jul 15, 2026
- Reserved
- Feb 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
FirefoxMozilla |
|
ThunderbirdMozilla |
|
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
- https://www.mozilla.org/security/advisories/mfsa2026-10/
- https://www.mozilla.org/security/advisories/mfsa2026-11/
- https://lists.debian.org/debian-lts-announce/2026/02/msg00028.html
- https://access.redhat.com/security/cve/CVE-2026-2447vdb-entry
- RHBZ#2440219issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2447.json
- https://access.redhat.com/errata/RHSA-2026:3984vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5320vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3976vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5227vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:4260vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3361vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:4629vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3517vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3338vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3967vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3515vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3492vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5228vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:4432vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3491vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5323vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3980vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3495vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5229vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3979vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3494vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5230vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:4022vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3493vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5326vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3983vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:4152vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5319vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3978vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3496vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5324vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3981vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3497vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:5231vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3982vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3339vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:4447vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:3516vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:8748vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:8746vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:8747vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16174vendor-advisory
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