CVE-2026-44673 – libyang: lyb_read_string() integer overflow → heap buffer overflow

CVE ID :CVE-2026-44673

Published : May 14, 2026, 8:35 p.m. | 22 minutes ago

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.

Severity: 0.0 | NA

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