CVE-2026-52296

EUVD-2026-77125
FFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
2.9 LOW
LOCAL
HIGH
NONE
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 4.9%
Affected Products (NVD)
VendorProductVersion
ffmpegffmpeg
𝑥
< 9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ffmpeg
bookworm
vulnerable
bookworm (security)
vulnerable
forky
7:9.0.2-3
fixed
sid
7:9.0.2-4
fixed
trixie
7:7.1.5-0+deb13u1
fixed
trixie (security)
7:7.1.5-0+deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ffmpeg
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
xenial
needs-triage
libav
jammy
dne
noble
dne
resolute
dne
trusty
needs-triage
Common Weakness Enumeration
References
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22988
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/23227a444de4a8f7696f46660cdd044b460f7e47
https://github.com/Kenan-Kamel/VulnerabilitiesReference/tree/main/FFmpeg/ExtradataPadding