CVE-2025-7773 Rockwell Automation ArmorBlock 5000 I/O – Web Server Vulnerabilities
Predictable session numbers in the web server allow attackers to bypass authentication and access the device.
- 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-2025-7773?
CVE-2025-7773 is a high-severity authentication bypass vulnerability in Rockwell Automation 5032-CFGB16M12DR, published on 14 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 within the 5032 16pt Digital Configurable module’s web server. The web server’s session number increments at an interval that correlates to the last two consecutive sign in session interval, making it predictable.
Weakness: CWE-863
Which versions are affected by CVE-2025-7773?
How do I fix CVE-2025-7773?
No fix has been published for CVE-2025-7773 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-7773 being exploited?
There is no known exploitation of CVE-2025-7773 in the wild and no public exploit code.
Sources
Also known as GHSA-xwr9-qph4-cpwg.