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Rockwell Automation/Allen-Bradley MicroLogix 1100 L16xxx < 10.000 HTTP Remote DoS



A MicroLogix 1100 programmable logic controller (PLC) has been detected which is vulnerable to a Denial of Service attack vector.


Rockwell Automation MicroLogix 1100 PLCs contain an unspecified flaw in the password mechanism that may allow a remote denial of service. The issue is only present when the HTTP server is enabled. This may allow a remote attacker to cause the program to crash.


Upgrade the firmware of MicroLogix 1100 L16xxx to 10.000 or later.