CVE-2019-19334

highpriority · track · 40EPSS 0.039 · 90 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.87% (90th) EPSS

CVSS 7.5 · high

Is it mine?

36 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-28

In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "identityref". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedlibyang-0:0.16.105-3.el8_1.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-0:0.16.105-3.el8_1.2.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-0:0.16.105-3.el8_1.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-0:0.16.105-3.el8_1.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-0:0.16.105-3.el8_1.2.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-0:0.16.105-3.el8_1.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debuginfo-0:0.16.105-3.el8_1.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debuginfo-0:0.16.105-3.el8_1.2.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debuginfo-0:0.16.105-3.el8_1.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debuginfo-0:0.16.105-3.el8_1.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debuginfo-0:0.16.105-3.el8_1.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debugsource-0:0.16.105-3.el8_1.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debugsource-0:0.16.105-3.el8_1.2.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debugsource-0:0.16.105-3.el8_1.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debugsource-0:0.16.105-3.el8_1.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedlibyang-debugsource-0:0.16.105-3.el8_1.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedpython3-libyang-debuginfo-0:0.16.105-3.el8_1.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedpython3-libyang-debuginfo-0:0.16.105-3.el8_1.2.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedpython3-libyang-debuginfo-0:0.16.105-3.el8_1.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedpython3-libyang-debuginfo-0:0.16.105-3.el8_1.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360
Fixedpython3-libyang-debuginfo-0:0.16.105-3.el8_1.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf
If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2019:4360

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · secalert@redhat.com USexploitability 2.2 · impact 5.9

v3.08.1highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Red Hat Product Security US

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-121USCWE-121US

affected products (36)

Products and version ranges known to be affected.

Red Hat libyang≤ libyang all versions before 1.0-r5enisa_euvdEU
cesnet libyang= 0.11nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.12nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.13nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.14nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.15nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 0.16nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
cesnet libyang= 1.0nvdUScpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
fedoraproject fedora= 31nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
redhat enterprise linux= 8.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
libyang-0:0.16.105-3.el8_1.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-0:0.16.105-3.el8_1.2.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-0:0.16.105-3.el8_1.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-0:0.16.105-3.el8_1.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-0:0.16.105-3.el8_1.2.src as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-0:0.16.105-3.el8_1.2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS
libyang-cpp-debuginfo-0:0.16.105-3.el8_1.2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)all versionsfixedredhat_csafUS

showing 20 of 36

advisories (1)

Vendor and ecosystem advisories describing this.

RHSA-2019:4360Red Hat Security Advisory: libyang security update2019-12-23csaf · redhat_csafUS
An update for libyang is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd redhat_csaf NVD CVE.org MITRE

published 2019-12-06modified 2026-06-17

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references (19)

External citations — patches, advisories, analysis.

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