Is CVE-2025-9951 in the CISA KEV catalog?

No. CVE-2025-9951 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2025-9951?

CVE-2025-9951 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-9951?

Upgrade ffmpeg on debian 11 to 7:4.3.9-0+deb11u2 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2025-9951

UNSCORED

NVD

Description

A heap-buffer-overflow write exists in jpeg2000dec FFmpeg which allows an attacker to potentially gain remote code execution or cause denial of service via the channel definition cdef atom of JPEG2000.

CWE-122Heap-based Buffer Overflow

How to fix

Remediation Available

ffmpegDebian

Fixed in:7:4.3.9-0+deb11u2CVE-2025-9951

Fixed in:7:5.1.7-0+deb12u1CVE-2025-9951

Fixed in:7:7.1.2-0+deb13u1CVE-2025-9951

Fixed in:7:7.1.2-1CVE-2025-9951

ffmpegUbuntu

Fixed in:7:3.4.11-0ubuntu0.1+esm11USN-7830-1

Fixed in:7:4.2.7-0ubuntu0.1+esm11USN-7830-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1+esm10USN-7830-1

Fixed in:7:6.1.1-3ubuntu5+esm6USN-7830-1

libavcodec57Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1+esm11USN-7830-1

libavcodec58Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1+esm11USN-7830-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1+esm10USN-7830-1

libavcodec60Ubuntu

Fixed in:7:6.1.1-3ubuntu5+esm6USN-7830-1

libavformat57Ubuntu

Fixed in:7:3.4.11-0ubuntu0.1+esm11USN-7830-1

libavformat58Ubuntu

Fixed in:7:4.2.7-0ubuntu0.1+esm11USN-7830-1

Fixed in:7:4.4.2-0ubuntu0.22.04.1+esm10USN-7830-1

libavformat60Ubuntu

Fixed in:7:6.1.1-3ubuntu5+esm6USN-7830-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Other references1

github.com

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-09-09.