7.5

CVE-2020-21041: debian debian_linux Classic Buffer Overflow

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2020-21041DEBIAN-CVE-2020-21041
Published 24-05-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-21041 is a high (CVSS 7.5) Classic Buffer Overflow vulnerability in debian debian_linux. EPSS estimates a 2.07% chance of exploitation in the next 30 days, higher than 81.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
2.07%
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 8 · Related 5
DLA-2742-1DSA-4990-1MGASA-2021-0495OPENSUSE-SU-2021:2322-1SUSE-SU-2021:2322-1SUSE-SU-2021:2929-1

Timeline

  1. 24-05-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Buffer Overflow vulnerability exists in FFmpeg 4.1 via apng_do_inverse_blend in libavcodec/pngenc.c, which could let a remote malicious user cause a Denial of Service

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.07%

Chance of exploitation in the next 30 days

Percentile

81%

Versus all other CVEs

30-day change

0.00 pp

From 2.07% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.07%

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