CVE-2011-3947 json
Buffer overflow in mjpegbdec.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…
published 2012-08-20 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3900
- cvss
- 6.8
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.9%
- EPSS 3.9% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
Buffer overflow in mjpegbdec.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 (crash) and possibly execute arbitrary code via a crafted MJPEG-B file.
Patch / fix
- ffmpeg Debian 14, Debian 13, Debian 12 7:2.4.1-1
debian advisories DEBIAN-CVE-2011-3947
Exploit prediction
3.94% chance of exploitation in the next 30 days, higher than 90% 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=commit%3Bh=b57d262412204e54a7ef8fa1b23ff4dcede622e5
- git.libav.org /?p=libav.git%3Ba=commit%3Bh=b57d262412204e54a7ef8fa1b23ff4dcede622e5
-
secunia.com
/advisories/49089
third-party-advisory
- ffmpeg.org /
- libav.org /
Sources
- CVE List CVE-2011-3947
- NVD CVE-2011-3947
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.