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No exploitation reportedFix available

CVE-2020-20453

No exploitation reported by the sources we read.

  • Published2021-05-25
  • WeaknessCWE-369

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service

Timeline

dates in UTC
  1. 2021-05-2520:15CVE publishedNVD

Versions per branch

NVD
Ffmpeg
BranchAffectedFixed in
4.2= 4.2no fix published
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published
10.0= 10.0no fix published
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • ffmpegUbuntu:Pro:16.04:LTSall versions · fixed in 7:2.8.17-0ubuntu0.1+esm1
  • ffmpegUbuntu:Pro:16.04:LTSall versions · fixed in 7:2.8.17-0ubuntu0.1+esm4
  • ffmpegUbuntu:22.04:LTSall versions · fixed in 7:4.4.2-0ubuntu0.22.04.1
  • ffmpegUbuntu:20.04:LTSall versions · fixed in 7:4.2.7-0ubuntu0.1
  • ffmpegUbuntu:18.04:LTSall versions · fixed in 7:3.4.11-0ubuntu0.1
  • ffmpegopenEuler:22.03-LTS-SP4all versions · fixed in 4.2.4-38.oe2203sp4
  • ffmpegopenEuler:20.03-LTS-SP4all versions · fixed in 4.2.4-38.oe2003sp4
  • ffmpegMageia:8all versions · fixed in 4.3.3-3.mga8.tainted

20 more package ranges on OSV.dev

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

  • EUVD-2020-13240same flawENISA EUVD · LicenseRef-ENISA-legal-notice
  • GHSA-934g-qjpp-c7xgsame flawGitHub Advisory Database · CC-BY-4.0
  • DLA-2818-1advisory covering several CVEsDebian · LicenseRef-unstated
  • DSA-4990-1advisory covering several CVEsDebian · LicenseRef-unstated
  • DSA-4998-1advisory covering several CVEsDebian · LicenseRef-unstated
  • MGASA-2021-0495advisory covering several CVEsMageia · LicenseRef-unstated
  • OESA-2026-2663advisory covering several CVEsopenEuler · LicenseRef-unstated
  • OESA-2026-2664advisory covering several CVEsopenEuler · LicenseRef-unstated
  • USN-5167-1advisory covering several CVEsUbuntu
  • USN-5472-1advisory covering several CVEsUbuntu

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published
2021-05-25
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-934g-qjpp-c7xg

Frequently asked questions

What is CVE-2020-20453?

FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service

Is CVE-2020-20453 actively exploited?

Active exploitation of CVE-2020-20453 has not been confirmed. Its EPSS score was 1.8% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-20453?

CVE-2020-20453 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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