cbcvebase.
CVE-2020-21041
published 2021-05-24

CVE-2020-21041: Buffer Overflow vulnerability exists in FFmpeg 4.1 via apng_do_inverse_blend in libavcodec/pngenc.c, which could let a remote malicious user cause a Denial of…

PriorityP337high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.05%
79.2th percentile
Buffer Overflow vulnerability exists in FFmpeg 4.1 via apng_do_inverse_blend in libavcodec/pngenc.c, which could let a remote malicious user cause a Denial of Service

Affected

12 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debiandebian_linux
debianffmpeg< ffmpeg 7:4.3.2-0+deb11u2 (bookworm)ffmpeg 7:4.3.2-0+deb11u2 (bookworm)
ffmpegffmpeg
ffmpegffmpeg>= 0 < 7:4.3.2-0+deb11u27:4.3.2-0+deb11u2
ffmpegffmpeg>= 0 < 7:4.3.2-0+deb11u27:4.3.2-0+deb11u2
ffmpegffmpeg>= 0 < 7:4.3.2-0+deb11u27:4.3.2-0+deb11u2
ffmpegffmpeg>= 0 < 7:4.3.2-0+deb11u27:4.3.2-0+deb11u2
ffmpegffmpeg>= 0 < 7:3.4.11-0ubuntu0.17:3.4.11-0ubuntu0.1
ffmpegffmpeg>= 0 < 7:4.2.7-0ubuntu0.17:4.2.7-0ubuntu0.1
ffmpegffmpeg>= 0 < 7:4.4.2-0ubuntu0.22.04.17:4.4.2-0ubuntu0.22.04.1
ffmpegffmpeg>= 0 < 7:2.8.17-0ubuntu0.1+esm47:2.8.17-0ubuntu0.1+esm4

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_ubuntu6.5MEDIUM
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.