cbcvebase.
CVE-2024-21785
published 2024-05-28

CVE-2024-21785: A leftover debug code vulnerability exists in the Telnet Diagnostic Interface functionality of AutomationDirect P3-550E 1.2.10.9. A specially crafted series of…

PriorityP264critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
1.51%
71.3th percentile
A leftover debug code vulnerability exists in the Telnet Diagnostic Interface functionality of AutomationDirect P3-550E 1.2.10.9. A specially crafted series of network requests can lead to unauthorized access. An attacker can send a sequence of requests to trigger this vulnerability.

Affected

13 ranges
VendorProductVersion rangeFixed in
automationdirectp1-540_firmware
automationdirectp1-540_firmware
automationdirectp1-550_firmware
automationdirectp1-550_firmware
automationdirectp2-550_firmware
automationdirectp2-550_firmware
automationdirectp3-530_firmware
automationdirectp3-530_firmware
automationdirectp3-550_firmware
automationdirectp3-550_firmware
automationdirectp3-550e
automationdirectp3-550e_firmware
automationdirectp3-550e_firmware

Detection & IOCsextracted from sources · hover to see the quote

  • Snort rules are available from Snort.org to detect exploitation of CVE-2024-21785 (TALOS-2024-1942)
  • The vulnerability enables the Telnet Diagnostic Interface on the AutomationDirect P3-550E 1.2.10.9; monitor for unexpected Telnet sessions or newly opened Telnet ports on affected PLC devices following ModbusRTU communication
  • ·The affected device exposes multiple control services (MQTT, Modbus, ENIP, DirectNET) over ethernet, serial, and USB, broadening the attack surface context around this vulnerability
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