6.5

CVE-2020-20448: ffmpeg Divide By Zero

CVSS: 6.5v3.1MediumModified
AliasesDEBIAN-CVE-2020-20448
Published 25-05-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-20448 is a medium (CVSS 6.5) Divide By Zero vulnerability in ffmpeg. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 59.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.92%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 3
DSA-4722-1OPENSUSE-SU-2021:2322-1SUSE-SU-2021:2322-1SUSE-SU-2021:2929-1

Timeline

  1. 25-05-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

FFmpeg 4.1.3 is affected by a Divide By Zero issue via libavcodec/ratecontrol.c, which allows a remote malicious user to cause a Denial of Service.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.92%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

0.00 pp

From 0.92% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.92%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • ffmpeg< 7:4.3-2
Ffmpeg1 product

2 vendors · 2 products

References

2 links