6.5

CVE-2020-20453: debian debian_linux Divide By Zero

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2020-20453DEBIAN-CVE-2020-20453
Published 25-05-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-20453 is a medium (CVSS 6.5) Divide By Zero vulnerability in debian debian_linux. EPSS estimates a 1.78% chance of exploitation in the next 30 days, higher than 77.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.78%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 6 · Related 2
DLA-2818-1DSA-4990-1DSA-4998-1MGASA-2021-0495USN-5167-1USN-5472-1

Timeline

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

Description

FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.78%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.78% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.78%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (trac.ffmpeg.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Ffmpeg1 product
Ubuntu1 product
  • ffmpeg< 7:2.8.17-0ubuntu0.1+esm1 | < 7:3.4.11-0ubuntu0.1 | < 7:4.2.7-0ubuntu0.1

3 vendors · 4 products

References

9 links