Medium severity · published May 26, 2021
CVE-2020-22021
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
6.5
CVSS
1.7%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FF
Ffmpeg · Ffmpeg
4.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-22021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-22021
Mailing List
https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
Exploit
https://trac.ffmpeg.org/ticket/8240
Third Party Advisory
https://www.debian.org/security/2021/dsa-4990
More from Debian Linux
10.0
CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2026-111497
Out-of-Bounds Write in Google Brotli Decoder