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NVD / CVE Program· CNA redhat

CVE-2011-0531: 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…

CriticalCVSS 9.3 · v2.0—Weaponized Fix available

Noroxi assessment

Priority: Plan (action score 50/100)

  • A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 41.8% (FIRST EPSS); higher than 98.7% of all records.
  • Fixed version: vlc (Debian:12) 1.1.7-1; vlc (Debian:6.0) 1.1.3-1squeeze3.

Add it to your regular patch cycle. Upgrade to vlc (Debian:12) 1.1.7-1; vlc (Debian:6.0) 1.1.3-1squeeze3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Feb 7, 2011
Updated
Jun 16, 2026
EPSS
41.8% · 98th percentile

Report tools

JSON

Action score

50

Plan

Add it to your regular patch cycle.

CVSS
37 / 40 · 9.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
13 / 30 · 41.8%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Weaponized exploit exists
  • A fix has been released

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Follow CVE-2011-0531

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
videolanvlc media player

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • videolan vlc media playerup to 1.1.6.1 inclusive
  • videolan vlc media player0.1.99b
  • videolan vlc media player0.1.99e
  • videolan vlc media player0.1.99f
  • videolan vlc media player0.1.99g
  • videolan vlc media player0.1.99h
  • videolan vlc media player0.1.99i
  • videolan vlc media player0.2.0
+12 more rows
  • videolan vlc media player0.2.60
  • videolan vlc media player0.2.61
  • videolan vlc media player0.2.62
  • videolan vlc media player0.2.63
  • videolan vlc media player0.2.70
  • videolan vlc media player0.2.71
  • videolan vlc media player0.2.72
  • videolan vlc media player0.2.73
  • videolan vlc media player0.2.80
  • videolan vlc media player0.2.81
  • videolan vlc media player0.2.82
  • videolan vlc media player0.2.83

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12vlcbefore 1.1.7-11.1.7-1
Debian:6.0vlcbefore 1.1.3-1squeeze31.1.3-1squeeze3

Same product

videolan: all records

Other highest-scoring records for the same primary product.

  • CVE-2010-3275libdirectx_plugin.dll in VideoLAN VLC Media Player before 1.1.8 allows remote attackers to execute arbitrary code via a crafted width in an…
    60This week
  • CVE-2008-4654Stack-based buffer overflow in the parse_master function in the Ty demux plugin (modules/demux/ty.c) in VLC Media Player 0.9.0 through…
    54Plan
  • CVE-2012-1775Stack-based buffer overflow in VideoLAN VLC media player before 2.0.1 allows remote attackers to execute arbitrary code via a crafted…
    50Plan

Published before and after this one in the same product

  • ← EarlierCVE-2011-0021Jan 25, 2011 · Multiple heap-based buffer overflows in cdg.c in the CDG decoder in VideoLAN VLC Media Player before 1.1.6 allow remote attackers to cause…
    39Monitor
  • ← EarlierCVE-2011-0522Feb 7, 2011 · The StripTags function in (1) the USF decoder (modules/codec/subtitles/subsdec.c) and (2) the Text decoder (modules/codec/subtitles/subsusf.
    42Plan
  • Later →CVE-2010-3276Mar 28, 2011 · libdirectx_plugin.dll in VideoLAN VLC Media Player before 1.1.8 allows remote attackers to execute arbitrary code via a crafted width in an…
    39Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:vlc1.1.7-1 · Debian:12Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrylocal2011-02-08
Metasploit moduleexploit/windows/fileformat/vlc_webmVideoLAN VLC MKV Memory Corruptionexploit2011-01-31

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-8 d
  2. Published
  3. First PoCsame day
  4. TodayNov 15, 2026+5760 d

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

    If successful

    Confidentiality
    C · data can be read
    Integrity
    C · data or configuration can be modified
    Availability
    C · the service can be disrupted
    Attack complexity
    M
    Confidentiality impact
    C
    Integrity impact
    C
    Availability impact
    C

    Weakness class (CWE)

    CWE-20 · Improper Input Validation

    CVSS vector

    AV:N/AC:M/Au:N/C:C/I:C/A:C

    nvd-primary

    Attack context

    MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

    References

    Show all references (12 more)

    Vendor advisories and official records. Exploit/PoC links are deliberately left out.

    All records