HOMEVULNERABILITIESCVE-2011-0531
CRITICALPOC

CVE-2011-0531

CWE-20Published: February 7, 2011· Updated: Jun 16, 2026

9.3
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2011-0531 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2011-0531. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected Vendors & Products

videolan1 product(s)
vlc media player
Source: NVD CPE · 69 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.openwall.com/lists/oss-security/2011/01/31/4
PATCHhttp://www.openwall.com/lists/oss-security/2011/01/31/8
PATCHhttp://www.videolan.org/security/sa1102.html
PATCHhttp://www.openwall.com/lists/oss-security/2011/01/31/4
PATCHhttp://www.openwall.com/lists/oss-security/2011/01/31/8
PATCHhttp://www.videolan.org/security/sa1102.html
ADVISORYhttp://secunia.com/advisories/43131
ADVISORYhttp://secunia.com/advisories/43131

All References (26)

→
http://git.videolan.org/?p=vlc.git%3Ba=commit%3Bh=59491dcedffbf97612d2c572943b56ee4289dd07
→
http://osvdb.org/70698
→
http://secunia.com/advisories/43131Vendor Advisory
→
http://secunia.com/advisories/43242
→
http://www.debian.org/security/2011/dsa-2159
→
http://www.openwall.com/lists/oss-security/2011/01/31/4Patch
→
http://www.openwall.com/lists/oss-security/2011/01/31/8Patch
→
http://www.securityfocus.com/bid/46060
→
http://www.securitytracker.com/id?1025018
→
http://www.videolan.org/security/sa1102.htmlPatch · Vendor Advisory
→
http://www.vupen.com/english/advisories/2011/0363
→
https://exchange.xforce.ibmcloud.com/vulnerabilities/65045
→
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12415
→
http://git.videolan.org/?p=vlc.git%3Ba=commit%3Bh=59491dcedffbf97612d2c572943b56ee4289dd07
→
http://osvdb.org/70698

Quick Facts

CVE IDCVE-2011-0531
CVSS Score9.3 / 10
SeverityCRITICAL
WeaknessCWE-20
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedFeb 7, 2011

Related CVEs (CWE-20)

CVE-2021-23279
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CVE-2007-6176
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CVE-2020-12388
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CVE-2020-12389
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CVE-2003-1425
10.0
CVE-2008-6555
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2011-0531 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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