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High 7.2Published Sep 9, 2025
CVE-2025-9951Remote code execution via Heap Buffer Overflow in FFmpeg JPEG2000
Updated under an hour ago ()
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It affects FFmpeg. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.2 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
- Weakness (CWE)
- CWE-122
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- NVD analysis
- Deferred
- Record last updated
- Feb 26, 2026
- First seen by InfoSec Signals
- Oct 19, 2026
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.