CVE-2018-12458
An improper integer type in the mpeg4_encode_gop_header function in libavcodec/mpeg4videoenc.c in FFmpeg 2.8 and 4.0 may trigger an assertion violation while converting a crafted AVI file to MPEG4, leading to a denial of service.
Does this matter?
Lower severity and a low EPSS score (1.51%). Track it; it rarely justifies an emergency change on its own.
Description
An improper integer type in the mpeg4_encode_gop_header function in libavcodec/mpeg4videoenc.c in FFmpeg 2.8 and 4.0 may trigger an assertion violation while converting a crafted AVI file to MPEG4, leading to a denial of service.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.51% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- ffmpeg/ffmpeg · debian/debian linux
- Source
- cve@mitre.org
EPSS 1.5% 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
- https://github.com/FFmpeg/FFmpeg/commit/6bbef938839adc55e8e048bc9cc2e0fafe2064dfPatch, Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/commit/e1182fac1afba92a4975917823a5f644bee7e6e8Issue Tracking, Patch, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4249Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/commit/6bbef938839adc55e8e048bc9cc2e0fafe2064dfPatch, Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/commit/e1182fac1afba92a4975917823a5f644bee7e6e8Issue Tracking, Patch, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4249Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.