PT-2026-41121 · Libyang · Libyang

Dom-Omg · Published 2026-05-14 · Updated 2026-05-28 · CVE-2026-44673

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions libyang versions prior to 5.2.15

Description The lyb read string() function in src/parser lyb.c contains an integer overflow. This occurs when parsing a maliciously crafted LYB binary blob, leading to a heap buffer overflow. An attacker capable of supplying LYB data to a libyang consumer, such as a NETCONF server or sysrepo, can cause a crash or heap corruption.

Recommendations Update to version 5.2.15.

Exploit

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-44673

OPENSUSE-SU-2026:10880-1

Affected Products

Libyang

References · 11

• 🔥 https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-44673 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-44673 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-44673 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-44673 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-44673 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-44673 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10880-1 · Vendor Advisory
• https://twitter.com/CVEnew/status/2055074228219543724 · Twitter Post
• https://t.me/CVEtracker/53834 · Telegram Post
• https://suse.com/security/cve/CVE-2026-44673 · Note