What is CVE-2026-50103?

CVE-2026-50103 is a medium-severity vulnerability in Mz Automation Libiec61850, classified under CWE-228. CVSS score: 6.5/10. Published 2026-07-23.

How severe is CVE-2026-50103?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Mz Automation Libiec61850

CVE-2026-50103

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.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mz Automation Libiec61850 — versions 1.0.0

Weakness classification (CWE)

CWE-228

References

ics-cert@hq.dhs.gov (government-resource)

Frequently asked questions

What is CVE-2026-50103?: CVE-2026-50103 is a medium-severity vulnerability in Mz Automation Libiec61850, classified under CWE-228. CVSS score: 6.5/10. Published 2026-07-23.
How severe is CVE-2026-50103?: Medium severity. CVSS v3 base score is 6.5 out of 10.