What is CVE-2023-27772?

CVE-2023-27772 is a high-severity vulnerability in Mz-Automation Libiec61850, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.5/10. Published 2023-04-13.

How severe is CVE-2023-27772?

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

Vulnerability in Mz-Automation Libiec61850

CVE-2023-27772

libiec61850 v1.5.1 was discovered to contain a segmentation violation via the function ControlObjectClient_setOrigin() at /client/client_control.c.

Published 2023-04-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Mz-Automation Libiec61850 — versions 1.5.1

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

github.com/mz-automation/libiec61850/issues/442 (Exploit, Vendor Advisory)
github.com/mz-automation/libiec61850/commit/79a8eaf26070e02044afc4b2ffbfe777dfd… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-27772?: CVE-2023-27772 is a high-severity vulnerability in Mz-Automation Libiec61850, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 7.5/10. Published 2023-04-13.
How severe is CVE-2023-27772?: High severity. CVSS v3 base score is 7.5 out of 10.