CVE-2020-20451 json
Denial of Service issue in FFmpeg 4.2 due to resource management errors via fftools/cmdutils.c.
published 2021-05-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-13238
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
Denial of Service issue in FFmpeg 4.2 due to resource management errors via fftools/cmdutils.c.
Patch / fix
- ffmpeg Debian 14, Debian 13, Debian 12 7:4.3-2
debian advisories DEBIAN-CVE-2020-20451
- 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+esm1
ubuntu advisories UBUNTU-CVE-2020-20451
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 3.4.2-11.3.1
suse advisories SUSE-SU-2021:2929-1SUSE-SU-2021:2322-1
- ffmpeg openSUSE Leap 15.3 3.4.2-11.3.1
opensuse advisories openSUSE-SU-2021:2322-1
- trac.ffmpeg.org/ticket/8094 advisory
Exploit prediction
1.35% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- trac.ffmpeg.org https://trac.ffmpeg.org/ticket/8094 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-401 Missing Release of Memory after Effective Lifetime
References
-
trac.ffmpeg.org
/ticket/8094
exploit, patch, vendor-advisory
-
lists.debian.org
/debian-lts-announce/2021/11/msg00012.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-20451
- NVD CVE-2020-20451
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.