CVE-2026-18583

MEDIUM 5.3

mz-automation libiec61850 MMS Request mms_mapping.c checkDataSetAccess out-of-bounds

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

A weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function checkDataSetAccess of the file src/iec61850/server/mms_mapping/mms_mapping.c of the component MMS Request Handler. This manipulation causes out-of-bounds read. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.6.2 is capable of addressing this issue. Patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Upgrading the affected component is recommended. The vendor was contacted early about this disclosure.

CWE	CWE-125 CWE-119
Vendor	mz-automation
Product	libiec61850
Published	Aug 3, 2026
Last Updated	Aug 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

mz-automation / libiec61850

1.6.0 1.6.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/385412 vuldb.com: https://vuldb.com/vuln/385412/cti vuldb.com: https://vuldb.com/cve/CVE-2026-18583 vuldb.com: https://vuldb.com/submit/844921 github.com: https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-2979 github.com: https://github.com/gff-cw/information/issues/3 github.com: https://github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4d58fc9278a7d github.com: https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2 github.com: https://github.com/mz-automation/libiec61850/

Credits

Chuan Wei 🔍 Carnegie (VulDB User) Carnegie (VulDB User) VulDB CNA Team