Vulnerability Database

313,825

Total vulnerabilities in the database

CVE-2020-21697

A heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c of FFmpeg 4.2 allows to cause a denial of service (DOS) via a crafted avi file.

  • Published: Aug 10, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2020-21697
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.5
  • AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
ffmpeg / ffmpeg 4.2 4.2.x
debian / debian_linux 11.0 11.0.x