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Fencer Intel
critical 9.3

CVE-2011-0531 in the critical feed json

demux/mkv/mkv.hpp in the MKV demuxer plugin in VideoLAN VLC media player 1.1.6.1 and earlier allows remote attackers to cause a denial of s…

published 2011-02-07 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-0550

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
41.9%
EPSS 41.9% chance of exploitation in 30 days, percentile 98%
public exploits
2
Metasploit, Exploit-DB

Summary

demux/mkv/mkv.hpp in the MKV demuxer plugin in VideoLAN VLC media player 1.1.6.1 and earlier allows remote attackers to cause a denial of service (crash) and execute arbitrary commands via a crafted MKV (WebM or Matroska) file that triggers memory corruption, related to "class mismatching" and the MKV_IS_ID macro.

Patch / fix

  • vlc Debian 14, Debian 13, Debian 12 1.1.7-1

debian advisories DEBIAN-CVE-2011-0531

Timeline

  1. First public exploit (Metasploit exploit/windows/fileformat/vlc_webm)
  2. Published

Exploit prediction

41.85% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

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.