CVE-2019-12730
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.06%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.06% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-908
- Affected
- ffmpeg/ffmpeg
- Source
- cve@mitre.org
EPSS 3.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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/ed188f6dcdf0935c939ed813cf8745d50742014bPatch, Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/compare/a97ea53...ba11e40Third Party Advisory
- 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
- https://github.com/FFmpeg/FFmpeg/commit/ed188f6dcdf0935c939ed813cf8745d50742014bPatch, Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/compare/a97ea53...ba11e40Third Party Advisory
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.