What is CVE-2020-22042?

CVE-2020-22042 is a medium-severity vulnerability in Ffmpeg, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.5/10. Published 2021-06-01.

How severe is CVE-2020-22042?

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

Vulnerability in Ffmpeg

CVE-2020-22042

A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak is affected by: memory leak in the link_filter_inouts function in libavfilter/graphparser.c.

Published 2021-06-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Ffmpeg — versions 4.2
Debian Linux — versions 11.0

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

trac.ffmpeg.org/ticket/8267 (Exploit, Issue Tracking, Vendor Advisory)
www.debian.org/security/2021/dsa-4998 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2020-22042?: CVE-2020-22042 is a medium-severity vulnerability in Ffmpeg, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.5/10. Published 2021-06-01.
How severe is CVE-2020-22042?: Medium severity. CVSS v3 base score is 6.5 out of 10.