High severity · published Sep 9, 2025
CVE-2025-9951
Remote code execution via Heap Buffer Overflow in FFmpeg JPEG2000
7.2
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FF
FFmpeg · FFmpeg
< 8.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9951
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9951
github.com
https://github.com/google/security-research/security/advisories/GHSA-39q3-f8jq-v6mg
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