CVE-2024-31581

CRITICALNVD 9.89.8—

9.8

FFmpeg version n6.1 was discovered to contain an improper validation of array index vulnerability in libavcodec/cbs_h266_syntax_template.c. This vulnerability allows attackers to cause undefined behavior within the application.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 44.2%
KEV: Not listed

Published

April 17, 2024

Last Modified

November 4, 2025

Advisory Details (6)

Auto-updated May 26, 2026

Upstream fix merged — awaiting tagged release. Sources: github_commit.

generic

[SECURITY] Fedora 38 Update: chromium-125.0.6422.60-1.fc38 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN/

github_commit

commit ce0c178a408d (ffmpeg/ffmpeg)

Fix landed in ffmpeg/ffmpeg commit ce0c178a408d — awaiting tagged release

https://github.com/ffmpeg/ffmpeg/commit/ce0c178a408d43e71085c28a47d50dc939b60196

generic

FFmpeg/libavcodec/cbs_h266_syntax_template.c at n6.1.1 · FFmpeg/FFmpeg · GitHub

https://github.com/FFmpeg/FFmpeg/blob/n6.1.1/libavcodec/cbs_h266_syntax_template.c#L2048

generic

CVE-2024-31581 · GitHub

https://gist.github.com/1047524396/a7e9273e12553775826784035333cdd8

generic

[SECURITY] Fedora 40 Update: chromium-124.0.6367.155-1.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LE3ASLH6QF2E5OVJI5VA3JSEPJFFFMNY/

generic

[SECURITY] Fedora 39 Update: chromium-124.0.6367.155-1.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPETICRXUOGRIM4U3BCRTIKE3IZWCSBT/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-129Improper Validation of Array Index

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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2026-06-01 13:51 UTCepss_batch
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Frequently asked(5)

What is CVE-2024-31581?

CVE-2024-31581 is a critical vulnerability published on April 17, 2024. FFmpeg version n6.1 was discovered to contain an improper validation of array index vulnerability in libavcodec/cbsh266syntax_template.c. This vulnerability allows attackers to cause undefined behavior within the application.

When was CVE-2024-31581 disclosed?

CVE-2024-31581 was first published in the National Vulnerability Database on April 17, 2024, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-31581 actively exploited?

CVE-2024-31581 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 44.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-31581?

CVE-2024-31581 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2024-31581?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-31581, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-31581

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CVE-2024-31581

📅 Published

🔄 Last Modified

📋 Advisory Details (6)

[SECURITY] Fedora 38 Update: chromium-125.0.6422.60-1.fc38 - package-announce - Fedora mailing-lists

commit ce0c178a408d (ffmpeg/ffmpeg)

FFmpeg/libavcodec/cbs_h266_syntax_template.c at n6.1.1 · FFmpeg/FFmpeg · GitHub

CVE-2024-31581 · GitHub

[SECURITY] Fedora 40 Update: chromium-124.0.6367.155-1.fc40 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 39 Update: chromium-124.0.6367.155-1.fc39 - package-announce - Fedora mailing-lists

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-31581?

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Advisory Details (6)

Frequently asked(5)

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