All vulnerabilities

Servers and applications

CVE-2020-21688

A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code.

Severity
High 8.8
Published
10 Aug 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
FFmpegServers and applications · cpe:a:ffmpeg:ffmpeg
  • Version 4.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-21688
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-21688