CVE-2025-55069 AutomationDirect CLICK PLUS Predictable Seed in Pseudo-Random Number Generator
Attackers can predict private keys due to a weak PRNG seed in AutomationDirect CLICK PLUS PLC firmware, compromising secure communications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-55069?
CVE-2025-55069 is a high-severity vulnerability in AutomationDirect CLICK PLUS C0-0x CPU firmware, published on 23 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A predictable seed in pseudo-random number generator vulnerability has been discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software implements a predictable seed for its pseudo-random number generator, which compromises the security of the generated private keys.
Weakness: CWE-337
Which versions are affected by CVE-2025-55069?
How do I fix CVE-2025-55069?
No fix has been published for CVE-2025-55069 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-55069 being exploited?
There is no known exploitation of CVE-2025-55069 in the wild and no public exploit code.
Sources
Also known as GHSA-mqmm-6427-xmx3.