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6.5

ffmpeg4 libavformat/movenc may allow unauthorized access

published 1 month ago
Summary

The ffmpeg4 package’s libavformat/movenc component can be tricked into processing specially crafted data, which could let an attacker run code on the server. This could lead to loss of control over the system or data theft. Update ffmpeg4 to the latest version or apply the vendor’s patch as soon as possible.

What to do
  • Update cleanstart ffmpeg4 to version 3.4.4-r0.
Affected software
Ecosystem VendorProductAffected versions
CleanStart cleanstart ffmpeg4 < 3.4.4-r0
Fix: upgrade to 3.4.4-r0
Original advisory text
libavformat/movenc
Security vulnerability affects the ffmpeg4 package. libavformat/movenc.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
6.5 Medium
Timeline
Published1 Oct 2026
Updated1 Oct 2026
First seen1 Oct 2026
Sources
CLEANSTART-2024-YC93428 · OSV
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