UpHeron
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Servers and applications

CVE-2011-3947

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.

Severity
Medium 6.8
Published
20 Aug 2012
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.9% in the next 30 daysHigher than 90% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Memory buffer errors (CWE-119)
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
FFmpegServers and applications · cpe:a:ffmpeg:ffmpeg
  • Version 0.8.10
  • Version 0.8.8
  • Version 0.8.7
  • Version 0.8.6
All 12 release lines
  • Version 0.7.1
  • Version 0.7.2
  • Version 0.7.6
  • Version 0.7.7
  • Version 0.7.8
  • Version 0.7.9
  • Version 0.7.11
  • Version 0.8.5
  • Version 0.8.6
  • Version 0.8.7
  • Version 0.8.8
  • Version 0.8.10

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-3947
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-3947