Vulnerability · Published Sep 20, 2021 · Assigned by mitre
CVE-2020-20891
High 8.8
In plain English
A high-severity security flaw in the ffmpeg package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.2%top 30.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Buffer Overflow vulnerability in function config_input in libavfilter/vf_gblur.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ffmpeg | 7:4.3-2 | DEBIAN-CVE-2020-20891 |
| Debian:13 | ffmpeg | 7:4.3-2 | DEBIAN-CVE-2020-20891 |
| Debian:14 | ffmpeg | 7:4.3-2 | DEBIAN-CVE-2020-20891 |
| Ubuntu:22.04:LTS | qtwebengine-opensource-src | no fix listed | UBUNTU-CVE-2020-20891 |
| Ubuntu:24.04:LTS | qtwebengine-opensource-src | no fix listed | UBUNTU-CVE-2020-20891 |
| Ubuntu:25.10 | qtwebengine-opensource-src | no fix listed | UBUNTU-CVE-2020-20891 |
Affected products (as reported)
References
- https://trac.ffmpeg.org/ticket/8282 x_refsource_MISC
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/64a805883d7223c868a683f0030837d859edd2ab x_refsource_MISC