CVE-2026-50103

Improper Handling of Syntactically Invalid Structure in MZ Automation libIEC61850

MEDIUM

6.5

CVSS Score

Published: July 23, 2026 at 08:50 PM UTC

Updated: October 24, 2026 at 01:10 PM UTC

1 product affected across 1 vendorAutomation 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

Start Free Sign In

Severity

MEDIUM6.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value.

Affected

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

Automation LIBIEC61850 · Mz Automation

90%

1.0.0 ≤ v ≤ 1.6.11.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

US Government Resource

Source: cverecord

https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-06

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

6.5MEDIUMicscert

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-228

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.

Create account Sign in

Free plan, no card