CVE-2020-22021: debian debian_linux Classic Buffer Overflow
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2020-22021DEBIAN-CVE-2020-22021
Published 26-05-2021Last modified 04-08-2024
Vulnerability summary
CVE-2020-22021 is a medium (CVSS 6.5) Classic Buffer Overflow vulnerability in debian debian_linux. EPSS estimates a 1.68% chance of exploitation in the next 30 days, higher than 76.6% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
1.68%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 12 · Related 9Timeline
- 26-05-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Buffer Overflow vulnerability in FFmpeg 4.2 at filter_edges function in libavfilter/vf_yadif.c, which could let a remote malicious user cause a Denial of Service.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.68%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
0.00 pp
From 1.68% on 19-09-2026
19-09-202619-10-2026
EPSS score1.68%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (trac.ffmpeg.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- ffmpeg< 7:4.3.2-0+deb11u2
- debian_linuxEOL9.0 | 10.0
Ffmpeg1 product
- ffmpegEOL4.2
Ubuntu1 product
- ffmpeg< 7:2.8.17-0ubuntu0.1+esm2 | < 7:3.4.11-0ubuntu0.1 | < 7:4.2.7-0ubuntu0.1
3 vendors · 4 products
References
8 links
lists.debian.org/debian-lts-announce/2021/08/msg00018.htmlMailing ListX Refsource MLISTThird Party Advisory