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Vulnerabilities

Vulnerability · CVE-2019-12874

An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7.

Published Jun 18, 2019 · catalog updated Nov 2, 2026 · vlc media player

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2019-12874. EPSS is 2.39%. Act only if a listed version of vlc media player is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.39%
Remediation
Version ranges on file
Affected products
cpe videolan/vlc media player

An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe videolan/vlc media player>= 3.0.0, <= 3.0.7

How to fix CVE-2019-12874

  • Upgrade

    CVE-2019-12874 lists a fix boundary at 3.0.7. Compare the installed build with that boundary before you change production.

  • Version check

    Affected <= 3.0.7

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2019-12874. EPSS is 2.39%. Act only if a listed version of vlc media player is installed.

Which versions are affected?

Compare what you have installed with videolan/vlc media player >= 3.0.0, <= 3.0.7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-415: Double Free. EPSS 2.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 18, 2019 · NIST NVD

    Detected

    An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.

  2. Nov 2, 2026 · NIST NVD

    Updated

    An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.

Sources

  • CVE.orgVulnerability recordCVE-2019-12874

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2019-12874

    An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • NIST NVDNov 2, 2026