What is CVE-2019-6138?

CVE-2019-6138 is a high-severity vulnerability in Mz-Automation Libiec61850, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-01-11.

How severe is CVE-2019-6138?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Mz-Automation Libiec61850

CVE-2019-6138

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.

Published 2019-01-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.015 (72.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Mz-Automation Libiec61850 — versions 1.3.1

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

github.com/mz-automation/libiec61850/issues/103 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-6138?: CVE-2019-6138 is a high-severity vulnerability in Mz-Automation Libiec61850, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-01-11.
How severe is CVE-2019-6138?: High severity. CVSS v3 base score is 7.5 out of 10.