Vulnerability · Published Jul 23, 2026 · Assigned by icscert
CVE-2026-50032NULL Pointer Dereference in MZ Automation libIEC61850
High 7.5
In plain English
A high-severity null pointer dereference in libIEC61850 from MZ Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 59.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| MZ Automation | libIEC61850 | 1.0.0 – through 1.6.1 |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-06 government-resource