CVE-2023-42770

critical

Description

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 is received over TCP/IP the RTU will simply accept the message with no authentication challenge.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-320-01

https://thehackernews.com/2025/10/two-cvss-100-bugs-in-red-lion-rtus.html

https://https://support.redlion.net/hc/en-us/articles/19339209248269-RLCSIM-2023-05-Authentication-Bypass-and-Remote-Code-Execution

https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-47202

Details

Source: Mitre, NVD

Published: 2023-11-21

Updated: 2023-11-29

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00223