CVE-2021-45769: Mz-Automation LIBIEC61850

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A NULL pointer dereference in AcseConnection_parseMessage at src/mms/iso_acse/acse.c of libiec61850 v1.5.0 can lead to a segmentation fault or application crash.

Affected products

• Mz-Automation LIBIEC61850: version 1.5.0 only

Published 2022-01-14. Last modified 2026-06-17.