What is CVE-2018-14394?

CVE-2018-14394 is a medium-severity vulnerability in Ffmpeg, classified under Divide By Zero. CVSS score: 6.5/10. Published 2018-07-19.

How severe is CVE-2018-14394?

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

Vulnerability in Ffmpeg

CVE-2018-14394

libavformat/movenc.c in FFmpeg before 4.0.2 allows attackers to cause a denial of service (application crash caused by a divide-by-zero error) with a user crafted Waveform audio file.

Published 2018-07-19 · 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: 0.011 (64.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.9% 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-369 — Divide By Zero

References

github.com/FFmpeg/FFmpeg/commit/3a2d21bc5f97aa0161db3ae731fc2732be6108b8 (Patch, Third Party Advisory)
lists.debian.org/debian-lts-announce/2019/01/msg00006.html (mailing-list)

Frequently asked questions

What is CVE-2018-14394?: CVE-2018-14394 is a medium-severity vulnerability in Ffmpeg, classified under Divide By Zero. CVSS score: 6.5/10. Published 2018-07-19.
How severe is CVE-2018-14394?: Medium severity. CVSS v3 base score is 6.5 out of 10.