CVE-2019-6138: Mz-Automation LIBIEC61850

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

An issue has been found in libIEC61850 v1.3.1. Memory_malloc and Memory_calloc in hal/memory/lib_memory.c have memory leaks when called from mms/iso_mms/common/mms_value.c, server/mms_mapping/mms_mapping.c, and server/mms_mapping/mms_sv.c (via common/string_utilities.c), as demonstrated by iec61850_9_2_LE_example.c.

Affected products

• Mz-Automation LIBIEC61850: version 1.3.1 only

Published 2019-01-11. Last modified 2026-06-17.