Detections
Analytics
CVE-2026-44673
high
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.
References
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44673.json
https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh
https://bugzilla.redhat.com/show_bug.cgi?id=2477617
https://access.redhat.com/security/cve/CVE-2026-44673
https://access.redhat.com/errata/RHSA-2026:25051