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Fencer Vulns
medium 5.5

CVE-2021-38114 json

`libavcodec/dnxhddec.c` in FFmpeg 4.4 does not check the return value of the `init_vlc` function, a...

published 2021-08-04 5 y ago modified 2026-07-23 3 mo ago also EUVD-2021-24587 , JLSEC-2025-115

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

libavcodec/dnxhddec.c in FFmpeg 4.4 does not check the return value of the init_vlc function, a similar issue to CVE-2013-0868.

Patch / fix

  • julia FFMPEG_jll 4.4.2+0
  • ffmpeg Debian 14, Debian 13, Debian 12 7:4.4.1-1

debian advisories DEBIAN-CVE-2021-38114

  • ffmpeg Ubuntu 18.04 LTS 7:3.4.11-0ubuntu0.1
  • ffmpeg Ubuntu 20.04 LTS 7:4.2.7-0ubuntu0.1
  • ffmpeg Ubuntu Pro 16.04 LTS 7:2.8.17-0ubuntu0.1+esm4

ubuntu advisories UBUNTU-CVE-2021-38114

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ffmpeg SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +10 more 3.4.2-4.34.2
  • ffmpeg SLE Workstation Extension 15 SP3, SLE Workstation Extension 15 SP2, SLE Module for Package Hub 15 SP3 +3 more 3.4.2-11.8.2

suse advisories SUSE-SU-2021:2929-1SUSE-SU-2021:2919-1

  • ffmpeg-4 openSUSE Tumbleweed 4.4-5.2
  • ffmpeg openSUSE Leap 15.3 3.4.2-11.8.2

opensuse advisories openSUSE-SU-2024:10754-1openSUSE-SU-2021:2919-1

  • ffmpeg Alpine 3.13 4.3.3-r0
  • ffmpeg Alpine 3.24, Alpine 3.23, Alpine 3.22 +8 more 4.4.1-r0
  • ffmpeg4 Alpine 3.22, Alpine 3.21, Alpine 3.20 +4 more 4.4.1-r0

alpine advisories ALPINE-CVE-2021-38114

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ffmpeg Arch Linux 2:4.4.1-1

arch linux advisories AVG-1989

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia FFMPEG_jll
>=4.4.0+0, <4.4.2+0
4.4.2+0

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.