Out-of-bounds Write Affecting ffmpeg package, versions <7:8.1.1-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.25% (15th percentile)

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  • Snyk IDSNYK-DEBIAN14-FFMPEG-19435503
  • published31 Aug 2026
  • disclosed28 Aug 2026

Introduced: 28 Aug 2026

CVE-2026-18393  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:14 ffmpeg to version 7:8.1.1-1 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 Debian. See How to fix? for Debian:14 relevant fixed versions and status.

A flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond the bounds of a heap-allocated buffer when processing crafted TDSC cursor data. A remote attacker could exploit this by supplying a specially crafted video file, potentially leading to a denial of service or arbitrary code execution.

CVSS Base Scores

version 3.1