What is CVE-2017-15186?

CVE-2017-15186 is a medium-severity vulnerability in Ffmpeg, classified under Double Free. CVSS score: 6.5/10. Published 2017-10-24.

How severe is CVE-2017-15186?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Double Free in Ffmpeg

CVE-2017-15186

Double free vulnerability in FFmpeg 3.3.4 and earlier allows remote attackers to cause a denial of service via a crafted AVI file.

Vulnerability class: Double Free

Published 2017-10-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.017 (75.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Ffmpeg

Weakness classification (CWE)

CWE-415 — Double Free

References

www.openwall.com/lists/oss-security/2017/10/20/4 (mailing-list, Patch, Mailing List, Third Party Advisory)
www.securityfocus.com/bid/101518 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2017/dsa-4049 (vendor-advisory)

Frequently asked questions

What is CVE-2017-15186?: CVE-2017-15186 is a medium-severity vulnerability in Ffmpeg, classified under Double Free. CVSS score: 6.5/10. Published 2017-10-24.
How severe is CVE-2017-15186?: Medium severity. CVSS v3 base score is 6.5 out of 10.