VULNERABILITY INTELLIGENCE

CVE-2026-44673

CVSS score7.5 HIGH
EPSS probability0.64%
CISA KEVNot currently listed
Published2026-05-14
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-190
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-190

Primary references