Integer Overflow or Wraparound Affecting ffmpeg package, versions [0,]
Threat Intelligence
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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Start learning- Snyk IDSNYK-CONAN-FFMPEG-18302529
- published25 Jul 2026
- disclosed24 Jul 2026
- creditUnknown
Introduced: 24 Jul 2026
NewCVE-2026-66039 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the mace_decode_frame process. An attacker can corrupt heap memory and potentially execute arbitrary code by supplying a crafted CAF file with malicious bytes_per_packet and frames_per_packet values that trigger an integer overflow during output sample count computation, leading to an undersized buffer allocation and a heap out-of-bounds write.