What is CVE-2020-20892?

CVE-2020-20892 is a high-severity vulnerability in Ffmpeg, classified under Divide By Zero. CVSS score: 8.8/10. Published 2021-09-20.

How severe is CVE-2020-20892?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2020-20892 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Ffmpeg

CVE-2020-20892

An issue was discovered in function filter_frame in libavfilter/vf_lenscorrection.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts due to a division by zero.

Published 2021-09-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.2% 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 — versions 4.2.1

Weakness classification (CWE)

CWE-369 — Divide By Zero

Public proof-of-concept exploits

akaganeite/CVE4PP

References

trac.ffmpeg.org/ticket/8265 (Exploit, Issue Tracking, Vendor Advisory)
git.videolan.org/

Frequently asked questions

What is CVE-2020-20892?: CVE-2020-20892 is a high-severity vulnerability in Ffmpeg, classified under Divide By Zero. CVSS score: 8.8/10. Published 2021-09-20.
How severe is CVE-2020-20892?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2020-20892 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.