CVE-2017-7859
FFmpeg before 2017-03-05 has an out-of-bounds write caused by a heap-based buffer overflow related to the ff_h264_slice_context_init function in libavcodec/h264dec.c.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
FFmpeg before 2017-03-05 has an out-of-bounds write caused by a heap-based buffer overflow related to the ff_h264_slice_context_init function in libavcodec/h264dec.c.
- 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
- 1.93% probability · 80th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- ffmpeg/ffmpeg
- Source
- cve@mitre.org
EPSS 1.9% since 28 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/97663Third Party Advisory, VDB Entry
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=713Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/97663Third Party Advisory, VDB Entry
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=713Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.