CVE-2026-18583

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

MEDIUM
5.3
CVSS Score
Published: August 3, 2026 at 04:15 AM UTC
Updated: October 23, 2026 at 10:10 PM UTC
2 products affected across 1 vendorLIBIEC61850Automation LIBIEC61850

Using libiec61850 by mz-automation?

Get instant alerts when new vulnerabilities affect libiec61850 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.3
Exploit prediction
EPSS 0.9%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions1.6.01.6.1
Vendor states this is fixed in 1.6.2 (unaffected)
Vendor states this is fixed in 1.6.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (9)

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-125CWE-119

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card