How severe is CVE-2019-6138?

CVE-2019-6138 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6138 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6138?

CVE-2019-6138 affects Mz-automation Libiec61850. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-6138?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-6138 published?

CVE-2019-6138 was published on 2019-01-11 and last updated on 2026-06-17.

CVE-2019-6138

CVE-2019-6138 is a high-severity vulnerability in Mz-automation Libiec61850 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Mz-automation Libiec61850
Published: 2019-01-11
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2019-6138?: CVE-2019-6138 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6138 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6138?: CVE-2019-6138 affects Mz-automation Libiec61850. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-6138?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-6138 published?: CVE-2019-6138 was published on 2019-01-11 and last updated on 2026-06-17.

References

https://github.com/mz-automation/libiec61850/issues/103

Affected products (1)

cpe:2.3:a:mz-automation:libiec61850:1.3.1:*:*:*:*:*:*:*

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