What is CVE-2016-7555?

CVE-2016-7555 is a medium-severity vulnerability in Ffmpeg, classified under Information Disclosure. CVSS score: 5.5/10. Published 2016-12-23.

How severe is CVE-2016-7555?

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

Information disclosure in Ffmpeg

CVE-2016-7555

The avi_read_header function in libavformat/avidec.c in FFmpeg before 3.1.4 is vulnerable to memory leak when decoding an AVI file that has a crafted "strh" structure.

Vulnerability class: Information Disclosure

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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (70.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Ffmpeg

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.openwall.com/lists/oss-security/2016/10/08/1 (mailing-list, Mailing List, Third Party Advisory)
www.securityfocus.com/bid/94838 (VDB Entry, Third Party Advisory, vdb-entry)
security.gentoo.org/glsa/201701-71 (vendor-advisory)

Frequently asked questions

What is CVE-2016-7555?: CVE-2016-7555 is a medium-severity vulnerability in Ffmpeg, classified under Information Disclosure. CVSS score: 5.5/10. Published 2016-12-23.
How severe is CVE-2016-7555?: Medium severity. CVSS v3 base score is 5.5 out of 10.