CVE-2019-12730

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-06-04 · updated 2026-06-17
Weakness: CWE-908

Description

aa_read_header in libavformat/aadec.c in FFmpeg before 3.2.14 and 4.x before 4.1.4 does not check for sscanf failure and consequently allows use of uninitialized variables.

Affected products

FFmpeg: before 3.2.14 — fixed in 3.2.14

How to fix

Upgrade to a fixed version: FFmpeg 3.2.14. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/109317
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/9b4004c054964a49c7ba44583f4cee22486dd8f2
https://git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/n4.1.4
https://github.com/FFmpeg/FFmpeg/commit/ed188f6dcdf0935c939ed813cf8745d50742014b
https://github.com/FFmpeg/FFmpeg/compare/a97ea53...ba11e40
https://seclists.org/bugtraq/2019/Aug/30
https://security.gentoo.org/glsa/202003-65
https://usn.ubuntu.com/4431-1/
https://www.debian.org/security/2019/dsa-4502
http://www.securityfocus.com/bid/109317
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/9b4004c054964a49c7ba44583f4cee22486dd8f2
https://git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/n4.1.4

Get alerted when CVE-2019-12730 or the next vulnerability affects your stack