CVE-2026-50103: libIEC61850 1.0.0 through 1.6.1

CVE-2026-50103. CVSS 3.1 base score 6.5 (MEDIUM, Vendor/CNA). EPSS 0.00269 (percentile 0.18024), scored 22-Oct-2026.

Affected technology

libIEC61850 · 1.0.0 through 1.6.1
MZ Automation

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Adjacent network · No privileges required · No user interaction required

What an attacker can do

A network-adjacent attacker may crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value. Vendor/CNA’s CVSS 4.0 assessment (base score 7.1/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 24-Oct-2026 15:08 UTC

CWE: CWE-228
CCR priority: 26.1 /100 (P4)
CVSS 3.1: 6.5 /10 · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
EPSS: 0.00269 · percentile 0.18089 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-50103.html