CVE-2023-40151

When user authentication is not enabled the shell can execute commands with the highest privileges. Red Lion SixTRAK and VersaTRAK Series RTUs with authenticated users enabled (UDR-A) any Sixnet UDR message will meet an authentication challenge over UDP/IP. When the same message comes over TCP/IP the RTU will simply accept the message with no authentication challenge.

• CWE-749

• https://support.redlion.net/hc/en-us/articles/19339209248269-RLCSIM-2023-05-Authentication-Bypass-and-Remote-Code-ExecutionMitigation, Patch, Vendor Advisory
• https://www.cisa.gov/news-events/ics-advisories/icsa-23-320-01Third Party Advisory, US Government Resource
• https://support.redlion.net/hc/en-us/articles/19339209248269-RLCSIM-2023-05-Authentication-Bypass-and-Remote-Code-ExecutionMitigation, Patch, Vendor Advisory
• https://www.cisa.gov/news-events/ics-advisories/icsa-23-320-01Third Party Advisory, US Government Resource

Published

Nov 21, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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