CVE-2026-67862

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/ua_client_highlevel.c. This allows a remote attacker to cause a denial of service.

Published 2026-08-04. Last modified 2026-08-31.