High severity7.5NVD Advisory· Published May 14, 2026· Updated Aug 7, 2026
CVE-2026-44673
CVE-2026-44673
Description
libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap buffer overflow when parsing a maliciously crafted LYB binary blob. An attacker who can supply LYB data to any libyang consumer (NETCONF server, sysrepo, etc.) can trigger a crash or potential heap corruption. This vulnerability is fixed in SO 5.2.15.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
21- osv-coords20 versionspkg:rpm/almalinux/libyangpkg:rpm/almalinux/libyang-develpkg:rpm/almalinux/libyang-devel-docpkg:rpm/opensuse/libyang&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/libyang&distro=openSUSE%20Tumbleweedpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
< 1.0.184-2.el8_10+ 19 more
- (no CPE)range: < 1.0.184-2.el8_10
- (no CPE)range: < 2.1.148-4.el10_2
- (no CPE)range: < 2.1.148-4.el10_2
- (no CPE)range: < 2.1.148-160000.4.1
- (no CPE)range: < 3.13.6-3.1
- (no CPE)range: < 1.0.184-150300.3.9.1
- (no CPE)range: < 1.0.184-150300.3.9.1
- (no CPE)range: < 2.1.55-150500.3.5.1
- (no CPE)range: < 2.1.55-150500.3.5.1
- (no CPE)range: < 2.1.148-150700.3.5.1
- (no CPE)range: < 2.1.148-8.8.1
- (no CPE)range: < 1.0.184-150300.3.9.1
- (no CPE)range: < 2.1.55-150500.3.5.1
- (no CPE)range: < 2.1.55-150500.3.5.1
- (no CPE)range: < 2.1.148-160000.4.1
- (no CPE)range: < 2.1.148-8.8.1
- (no CPE)range: < 1.0.184-150300.3.9.1
- (no CPE)range: < 2.1.55-150500.3.5.1
- (no CPE)range: < 2.1.55-150500.3.5.1
- (no CPE)range: < 2.1.148-160000.4.1
Patches
Vulnerability mechanics
References
11- access.redhat.com/errata/RHSA-2026:24545nvd
- access.redhat.com/errata/RHSA-2026:24758nvd
- access.redhat.com/errata/RHSA-2026:25051nvd
- access.redhat.com/errata/RHSA-2026:49666nvd
- access.redhat.com/errata/RHSA-2026:51339nvd
- access.redhat.com/errata/RHSA-2026:51351nvd
- access.redhat.com/errata/RHSA-2026:51368nvd
- access.redhat.com/security/cve/CVE-2026-44673nvd
- bugzilla.redhat.com/show_bug.cginvd
- github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xhnvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44673.jsonnvd
News mentions
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