6.5

CVE-2026-38345: ffmpeg Divide By Zero

CVSS: 6.5v3.1MediumDeferred
AliasesUBUNTU-CVE-2026-38345DEBIAN-CVE-2026-38345
Published 27-08-2026Last modified 02-09-2026
Open JSON

Vulnerability summary

CVE-2026-38345 is a medium (CVSS 6.5) Divide By Zero vulnerability in ffmpeg. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 27.7% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.36%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2026:11794-1OPENSUSE-SU-2026:12064-1OPENSUSE-SU-2026:12108-1

Timeline

  1. 27-08-2026
    PublishedVulnerability first disclosed.
  2. 02-09-2026
    Last modifiedVulnerability information updated.

Description

A Division-by-Zero vulnerability in the ff_sws_init_single_context function (/libswscale/utils.c) of FFmpeg N-122528-gdd2976b9e1 allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

+0.11 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.36%

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

Ubuntu2 products
  • ffmpegAll versions (No fix recorded)
  • libavAll versions (No fix recorded)
Debian1 product
  • ffmpeg< 7:8.1-1

2 vendors · 3 products

References

5 links