What is CVE-2020-22024?

CVE-2020-22024 is a medium-severity vulnerability in Ffmpeg, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2021-05-26.

How severe is CVE-2020-22024?

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

Buffer overflow in Ffmpeg

CVE-2020-22024

Buffer Overflow vulnerability in FFmpeg 4.2 at the lagfun_frame16 function in libavfilter/vf_lagfun.c, which could let a remote malicious user cause Denial of Service.

Vulnerability class: Buffer Overflow

Published 2021-05-26 · 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: 0.010 (62.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Ffmpeg — versions 4.2

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

trac.ffmpeg.org/ticket/8310 (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-22024?: CVE-2020-22024 is a medium-severity vulnerability in Ffmpeg, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2021-05-26.
How severe is CVE-2020-22024?: Medium severity. CVSS v3 base score is 6.5 out of 10.