1756 Enbt
Monthly
Denial-of-service in Rockwell Automation 1756-EN2, 1756-EN3, and 1756-ENBT ControlLogix EtherNet/IP communication modules lets an unauthenticated network attacker drop active device connections by sending malformed CIP Implicit (I/O) Connection packets. Because CVSS 4.0 rates only availability impact (VC:N/VI:N/VA:H) and connections recover immediately once the traffic stops, the flaw enables repeatable disruption rather than persistent outage or code execution. No public exploit identified at time of analysis, and the module is not in CISA KEV.
An information exposure of confidential information results when the device receives a specially crafted CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP that changes the product’s. Rated high severity (CVSS 8.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Denial-of-service in Rockwell Automation 1756-EN2, 1756-EN3, and 1756-ENBT ControlLogix EtherNet/IP communication modules lets an unauthenticated network attacker drop active device connections by sending malformed CIP Implicit (I/O) Connection packets. Because CVSS 4.0 rates only availability impact (VC:N/VI:N/VA:H) and connections recover immediately once the traffic stops, the flaw enables repeatable disruption rather than persistent outage or code execution. No public exploit identified at time of analysis, and the module is not in CISA KEV.
An information exposure of confidential information results when the device receives a specially crafted CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP that changes the product’s. Rated high severity (CVSS 8.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.