CVE-2024-31581

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-04-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
62.3%
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.

Data Freshness Timeline

(refreshed 11× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 109 total refreshes for this CVE.

  1. 2026-07-23 14:17 UTCEPSS rescore
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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 62.3% 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.

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