CVE-2026-2447
libvpx - security update
8.8
HIGH
CVSS 3.1
EPSS 0.02%
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.
How to fix CVE-2026-2447
To remediate CVE-2026-2447, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 140.8.0esr-1 or later
- —upgrade to 1.9.0-1+deb11u5 or later
- —upgrade to 1.9.0-1+deb11u5 or later
- —upgrade to 1.12.0-1+deb12u5 or later
- —upgrade to 1:140.8.0esr-1 or later
Is CVE-2026-2447 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 140.8.0esr-1
- from 0, < 1.9.0-1+deb11u5
- from 0, < 1.9.0-1+deb11u5
- from 0, < 1.12.0-1+deb12u5
- from 0, < 1:140.8.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |