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Fencer Vulns
high 8.8

CVE-2019-2126 json

In ParseContentEncodingEntry of mkvparser.cc, there is a possible double free due to a missing reset of a freed pointer.

published 2019-08-20 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-11768

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.5%
EPSS 5.5% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

In ParseContentEncodingEntry of mkvparser.cc, there is a possible double free due to a missing reset of a freed pointer. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android. Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-127702368.

Patch / fix

  • libvpx Ubuntu 18.04 LTS 1.7.0-3ubuntu0.18.04.1
  • godot Ubuntu Pro 20.04 LTS 3.2-stable-2ubuntu0.1~esm1
  • godot Ubuntu Pro 22.04 LTS 3.2.3-stable-1ubuntu0.1~esm1
  • godot Ubuntu Pro 24.04 LTS 3.5.2-stable-2ubuntu0.24.04.1~esm1

ubuntu advisories UBUNTU-CVE-2019-2126

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libvpx RHEL 8 1.7.0-8.el8

red hat advisories RHSA-2020:4629

  • libvpx SLES for SAP 15, SLES 15-LTSS, SLE Module for Package Hub 15 +6 more 1.6.1-6.3.1

suse advisories SUSE-SU-2020:0143-1

  • libvpx openSUSE Tumbleweed 1.10.0-1.3
  • libvpx openSUSE Leap 15.1 1.6.1-lp151.5.3.1

opensuse advisories openSUSE-SU-2024:11010-1openSUSE-SU-2020:0105-1

  • libvpx AlmaLinux 8 1.7.0-8.el8

almalinux advisories ALSA-2020:4629

  • libvpx Rocky Linux 8 1.7.0-8.el8

rocky linux advisories RLSA-2020:4629

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-2126 updated cvss 8.8

libvpx: Double free in ParseContentEncodingEntry() in mkvparser.cc

  • Red Hat Enterprise Linux 6 libvpx, libvpx-utils
    affected: no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) libvpx-devel 1.7.0-8.el8, libvpx-debuginfo 1.7.0-8.el8, libvpx-debugsource 1.7.0-8.el8, libvpx-utils-debuginfo 1.7.0-8.el8 Red Hat Enterprise Linux AppStream (v. 8) libvpx 1.7.0-8.el8
    fixed: vendor fix RHSA-2020:4629
  • Red Hat Enterprise Linux 7 libvpx, libvpx-utils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.51% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • n/a Android

Classification

Weakness

References

Sources

Fencer Vulns 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.