How severe is CVE-2018-18937?

CVE-2018-18937 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-2018-18937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18937?

CVE-2018-18937 affects Mz-automation Libiec61850. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18937?

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-2018-18937 published?

CVE-2018-18937 was published on 2018-11-05 and last updated on 2026-06-17.

CVE-2018-18937

CVE-2018-18937 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Mz-automation Libiec61850
Published: 2018-11-05
Last modified: 2026-06-17

Description

An issue has been found in libIEC61850 v1.3. It is a NULL pointer dereference in ClientDataSet_getValues in client/ied_connection.c.

Frequently asked questions

What is CVE-2018-18937?: An issue has been found in libIEC61850 v1.3. It is a NULL pointer dereference in ClientDataSet_getValues in client/ied_connection.c.
How severe is CVE-2018-18937?: CVE-2018-18937 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-2018-18937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18937?: CVE-2018-18937 affects Mz-automation Libiec61850. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18937?: 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-2018-18937 published?: CVE-2018-18937 was published on 2018-11-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mz-automation:libiec61850:1.3:*:*:*:*:*:*:*

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