What is CVE-2017-7865?

CVE-2017-7865 is a critical-severity vulnerability in Ffmpeg, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2017-04-14.

How severe is CVE-2017-7865?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Ffmpeg

CVE-2017-7865

FFmpeg before 2017-01-24 has an out-of-bounds write caused by a heap-based buffer overflow related to the ipvideo_decode_block_opcode_0xA function in libavcodec/interplayvideo.c and the avcodec_align_dimensions2 function in libavcodec/utils.c.

Vulnerability class: Buffer Overflow

Published 2017-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.026 (84.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Ffmpeg
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

lists.debian.org/debian-lts-announce/2019/02/msg00005.html (mailing-list, Mailing List, Third Party Advisory)
github.com/FFmpeg/FFmpeg/commit/2080bc33717955a0e4268e738acf8c1eeddbf8cb (Patch, Third Party Advisory)
bugs.chromium.org/p/oss-fuzz/issues/detail (VDB Entry, Third Party Advisory)
www.securityfocus.com/bid/97685 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-7865?: CVE-2017-7865 is a critical-severity vulnerability in Ffmpeg, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2017-04-14.
How severe is CVE-2017-7865?: Critical severity. CVSS v3 base score is 9.8 out of 10.