Description
The ACSE layer contains a flaw in the processing of AARQ PDUs during MMS
connection establishment. When parsing certain fields within the
calling AP title, an attacker controlled length value of zero or one may
cause the parser to read past the end of a heap buffer.
Published: 2026-07-30
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

MZ Automation GmbH recommends that users update to version 1.6.2.

Tracking

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Advisories

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History

Thu, 30 Jul 2026 22:45:00 +0000

Type Values Removed Values Added
Description The ACSE layer contains a flaw in the processing of AARQ PDUs during MMS connection establishment. When parsing certain fields within the calling AP title, an attacker controlled length value of zero or one may cause the parser to read past the end of a heap buffer.
Title MZ Automation libiec61850 Out-of-bounds Read
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2026-07-30T22:29:20.516Z

Reserved: 2026-07-27T19:32:49.404Z

Link: CVE-2026-56758

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses