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.
The Web server password authentication mechanism used by the products is vulnerable to a MitM and Replay attack. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, no authentication required. 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.
The device does not properly validate the data being sent to the buffer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 13.4% and no vendor patch available.
The device does not properly authenticate users and the potential exists for a remote user to upload a new firmware image to the Ethernet card, whether it is a corrupt or legitimate firmware image. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 11.8% and no vendor patch available.
The device does not properly validate the data being sent to the buffer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 13.4% and 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 instructs the CPU to stop logic. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, 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.
The Web server password authentication mechanism used by the products is vulnerable to a MitM and Replay attack. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, no authentication required. 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.
The device does not properly validate the data being sent to the buffer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 13.4% and no vendor patch available.
The device does not properly authenticate users and the potential exists for a remote user to upload a new firmware image to the Ethernet card, whether it is a corrupt or legitimate firmware image. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 11.8% and no vendor patch available.
The device does not properly validate the data being sent to the buffer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 13.4% and 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 instructs the CPU to stop logic. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.