CVE-2026-50032CWE-476

NULL Pointer Dereference in MZ Automation libIEC61850

High · published July 23, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
38.9
In the wild
Unconfirmed
What it is

A NULL pointer dereference in the MMS Write Named Variable List handler, which may allow a network adjacent attacker to crash the server by sending a WriteRequest with an empty listOfData field.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00460 · 38.9th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-07-23T20:53Z
EPSS history
Timeline
  • 23 JUL 20:53Z
    NULL Pointer Dereference in MZ Automation libIEC61850
    cvelistv5