Heap-based Buffer Overflow Affecting ffmpeg package, versions [,8.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-FFMPEG-12818390
- published18 Sept 2025
- disclosed9 Sept 2025
- creditAndy Nguyen
Introduced: 9 Sep 2025
NewCVE-2025-9951 (opens in a new tab)How to fix?
Upgrade ffmpeg to version 8.0 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the get_siz function in jpeg2000dec.c. An attacker can execute arbitrary code or cause a crash by supplying a crafted JPEG2000 file containing a malicious cdef atom.