---
id: CVE-2026-38345
title: >-
  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.
summary: >-
  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.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-369
published: '2026-08-28'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:42:20.313'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-38345'
references:
  - url: 'https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21585'
    label: cve@mitre.org
  - url: 'https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21585'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00355
epssPercentile: 0.26426
ingestedAt: '2026-09-08T20:10:03.159Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.