CVE-2025-9951: Heap Overflow

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.

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Weakness Type (CWE)

CWE-122 CWE-122

References

Other References

https://github.com/google/security-research/security/advisories/GHSA-39q3-f8jq-v6mg

Frequently Asked Questions

What is CVE-2025-9951? +

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.

How do I check if I'm vulnerable to CVE-2025-9951? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-9951