What is CVE-2016-9561?

CVE-2016-9561 is a medium-severity vulnerability in Ffmpeg, classified under CWE-399. CVSS score: 5.5/10. Published 2016-12-23.

How severe is CVE-2016-9561?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Ffmpeg

CVE-2016-9561

The che_configure function in libavcodec/aacdec_template.c in FFmpeg before 3.2.1 allows remote attackers to cause a denial of service (allocation of huge memory, and being killed by the OS) via a crafted MOV file.

Published 2016-12-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Ffmpeg

Weakness classification (CWE)

CWE-399

References

www.openwall.com/lists/oss-security/2016/12/08/1 (mailing-list, Mailing List, Third Party Advisory)
www.securityfocus.com/bid/94756 (vdb-entry)

Frequently asked questions

What is CVE-2016-9561?: CVE-2016-9561 is a medium-severity vulnerability in Ffmpeg, classified under CWE-399. CVSS score: 5.5/10. Published 2016-12-23.
How severe is CVE-2016-9561?: Medium severity. CVSS v3 base score is 5.5 out of 10.