CVE-2026-50032 NULL Pointer Dereference in MZ Automation libIEC61850
A network-adjacent attacker can crash the server by sending a malformed MMS WriteRequest with an empty data list.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-50032?
CVE-2026-50032 is a high-severity vulnerability in MZ Automation libIEC61850, published on 23 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-476
Which versions are affected by CVE-2026-50032?
How do I fix CVE-2026-50032?
No fix has been published for CVE-2026-50032 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-50032 being exploited?
There is no known exploitation of CVE-2026-50032 in the wild and no public exploit code.
Sources
Also known as GHSA-37jp-3q9w-phcm.