MZ Automation libIEC61850 Access of Resource Using Incompatible Type ('Type Confusion')

published 2022-09-23 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-35192

cvss: 8.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

MZ Automation's libIEC61850 (versions 1.4 and prior; version 1.5 prior to commit a3b04b7bc4872a5a39e5de3fdc5fbde52c09e10e) accesses a resource using an incompatible type, which could allow an attacker to crash the server with a malicious payload.

Patch / fix

fixed in 1

MZ Automation libIEC61850 Commit: a3b04b7bc4872a5a39e5de3fdc5fbde52c09e10e

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 18 mo ago (2025-04-16)

Exploit prediction

1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

MZ Automation libIEC61850

Classification

Weakness

CWE-843 Access of Resource Using Incompatible Type

References

cisa.gov /uscert/ics/advisories/icsa-22-251-01
third-party-advisory, us-government-resource

Sources

CVE List CVE-2022-2971
NVD CVE-2022-2971

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary