CVE-2025-13824 Micro820®, Micro850®, Micro870® – Specialized Fuzzing Vulnerabilities
Attackers can cause a hard fault and unresponsiveness in Rockwell Micro8 PLCs by sending malformed CIP packets, requiring a power cycle 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-2025-13824?
CVE-2025-13824 is a high-severity denial of service vulnerability in Rockwell Automation Micro820®, Micro850®, Micro870®, published on 15 Dec 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 packets during fuzzing. The controller enters a hard fault with solid red Fault LED 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 0xF019. To recover, clear the fault.
Weakness: CWE-763
Which versions are affected by CVE-2025-13824?
How do I fix CVE-2025-13824?
No fix has been published for CVE-2025-13824 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-2025-13824 being exploited?
There is no known exploitation of CVE-2025-13824 in the wild and no public exploit code.
Sources
Also known as GHSA-qjvf-9q24-j5qm.