CVE-2024-31581

FFmpeg version n6.1 was discovered to contain an improper validation of array index vulnerability...

9.8 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.11%Up 1.1 points since Apr 18, 2024

What each source reports

CVE List Score used 9.8

Record: CVE-2024-31581
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-129
Updated: 2026-11-02

EUVDEUVD-2024-29457 9.8

Record: EUVD-2024-29457
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-w4m9-fjxw-9x39 9.8

FFmpeg version n6.1 was discovered to contain an improper validation of array index vulnerability...

Record: GHSA-w4m9-fjxw-9x39
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-129
Updated: 2026-11-02

NVD 9.8

Record: CVE-2024-31581
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-129
Updated: 2026-11-02

OSV 9.8

Record: CVE-2024-31581
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-07

OSVDEBIAN-CVE-2024-31581 9.8

Record: DEBIAN-CVE-2024-31581
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-31581 9.8

Record: UBUNTU-CVE-2024-31581
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`ffmpeg` Debian:13	before 7:7.0.1-3	7:7.0.1-3
`ffmpeg` Debian:14	before 7:7.0.1-3	7:7.0.1-3

History

History
Recorded	Changed	Sources
Nov 6, 2026	facts	OSV
Nov 3, 2026	affected
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-31581 is a critical vulnerability (CVSS 9.8) in Ffmpeg, published April 17, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.11%, the 66th percentile. Fixed in ffmpeg 7:7.0.1-3.

References

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