CVE-2011-3940: Ffmpeg

Medium severity, CVSS 6.8. EPSS: 2.7% chance of exploitation in the next 30 days.

nsvdec.c in libavcodec in FFmpeg 0.7.x before 0.7.12 and 0.8.x before 0.8.11, and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1, allows remote attackers to cause a denial of service (out-of-bounds read and write) via a crafted NSV file that triggers "use of uninitialized streams."

Affected products

• Ffmpeg Ffmpeg: version 0.7.1 only; version 0.7.2 only; version 0.7.6 only; version 0.7.7 only; version 0.7.8 only; version 0.7.9 only; …
• Libav Libav: version 0.5 only; version 0.5.1 only; version 0.5.2 only; version 0.5.3 only; version 0.5.4 only; version 0.5.5 only; …

Published 2012-08-20. Last modified 2026-06-16.