CVE-2026-38347 Affecting ffmpeg package, versions <7:4.2.7-0ubuntu0.1+esm18


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.46% (37th percentile)

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  • Snyk IDSNYK-UBUNTU2004-FFMPEG-19437382
  • published13 Oct 2026
  • disclosed28 Aug 2026

Introduced: 28 Aug 2026

CVE-2026-38347  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 ffmpeg to version 7:4.2.7-0ubuntu0.1+esm18 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ffmpeg package and not the ffmpeg package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A heap overflow in the ff_sws_alphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 722a217 allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVSS Base Scores

version 3.1