CVE-2025-7693 Rockwell Automation Micro800 Vulnerability
Malformed CIP packets cause Rockwell Micro800 PLCs to crash and become unresponsive, requiring a power cycle and fault clear to recover.
- 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-2025-7693?
CVE-2025-7693 is a critical denial of service vulnerability in Rockwell Automation PLC - Micro850 L50E, published on 18 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security issue exists due to improper handling of malformed CIP Forward Close packets during fuzzing. The controller enters a solid red Fault LED state and becomes unresponsive. Upon power cycle, the controller will enter recoverable fault where the MS LED and Fault LED become flashing red and reports fault code 0xF015. To recover, clear the fault.
Weakness: CWE-20
Which versions are affected by CVE-2025-7693?
How do I fix CVE-2025-7693?
No fix has been published for CVE-2025-7693 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-7693 being exploited?
There is no known exploitation of CVE-2025-7693 in the wild and no public exploit code.
Sources
Also known as GHSA-3p2j-q62h-27w3.