CVE-2011-3940 json
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 be…
published 2012-08-20 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3893
- cvss
- 6.8
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.7%
- EPSS 2.7% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
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."
Patch / fix
- ffmpeg Debian 14, Debian 13, Debian 12 7:2.4.1-1
debian advisories DEBIAN-CVE-2011-3940
Exploit prediction
2.73% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
ubuntu.com
/usn/USN-1479-1
vendor-advisory
-
debian.org
/security/2012/dsa-2471
vendor-advisory
- git.videolan.org /?p=ffmpeg.git%3Ba=commitdiff%3Bh=c898431ca5ef2a997fe9388b650f658fb60783e5
- git.videolan.org /?p=ffmpeg.git%3Ba=commitdiff%3Bh=8fd8a48263ff1437f9d02d7e78dc63efb9b5ed3a
-
secunia.com
/advisories/49089
third-party-advisory
- ffmpeg.org /
- libav.org /
- git.videolan.org /?p=ffmpeg.git%3Ba=commitdiff%3Bh=5c011706bc752d34bc6ada31d7df2ca0c9af7c6b
Sources
- CVE List CVE-2011-3940
- NVD CVE-2011-3940
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.