CVE-2019-2126

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.

Published: 2019-08-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-2126 is rated Moderate Risk (63.5/100): CVSS High severity, with high exploitation likelihood (EPSS 5.39%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-2126

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 9.15% 5.39% -3.76%
2 2026-06-05 9.31% 9.15% -0.16%
3 2025-12-28 — 9.31% —

Full EPSS history (29 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-2126

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2019-2126

OS Trackers for CVE-2019-2126

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2019-2126
suse high CVE-2019-2126 severity important: SUSE including 29 source package names (libvpx, libvpx-1.7.0-8.el8, …), 85 product×package rows across 52 product lines (SUSE Liberty Linux 8, SUSE Linux Enterprise Desktop 12 SP4, … (52 product lines)): Fixed 51, Known Not Affected 34. https://www.suse.com/security/cve/CVE-2019-2126/
ubuntu low CVE-2019-2126 low priority: Ubuntu including 7 source packages (aom, chromium-browser, …), 126 status rows across 18 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 62, ignored 31, DNE 14, needs-triage 11, released 7, needed 1. https://ubuntu.com/security/CVE-2019-2126

Affected software / configurations for CVE-2019-2126

Vendor Product Version Raw CPE
google android 7.0 cpe:2.3:o:google:android:7.0:*:*:*:*:*:*:*
google android 7.1.1 cpe:2.3:o:google:android:7.1.1:*:*:*:*:*:*:*
google android 7.1.2 cpe:2.3:o:google:android:7.1.2:*:*:*:*:*:*:*
google android 8.0 cpe:2.3:o:google:android:8.0:*:*:*:*:*:*:*
google android 8.1 cpe:2.3:o:google:android:8.1:*:*:*:*:*:*:*
google android 9.0 cpe:2.3:o:google:android:9.0:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:-:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

References for CVE-2019-2126

cvelogic Threat Intelligence