CVE-2025-55038 AutomationDirect CLICK PLUS Missing Authorization
Low-privilege users can read and modify PLC variables beyond their authorization level via the KOPR protocol in AutomationDirect CLICK PLUS devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-55038?
CVE-2025-55038 is a high-severity missing authorization vulnerability in AutomationDirect CLICK PLUS C0-0x CPU firmware, published on 23 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An authorization bypass vulnerability has been discovered in the Click Plus C2-03CPU2 device firmware version 3.60. Through the KOPR protocol utilized by the Remote PLC application, authenticated users with low-level access permissions can exploit this vulnerability to read and modify PLC variables beyond their intended authorization level.
Weakness: CWE-862
Which versions are affected by CVE-2025-55038?
How do I fix CVE-2025-55038?
No fix has been published for CVE-2025-55038 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-55038 being exploited?
There is no known exploitation of CVE-2025-55038 in the wild and no public exploit code.
Sources
Also known as GHSA-28rh-fv64-h63q.