CVE-2023-27856 — In affected versions, path traversal exists when processing a message of type 8

In affected versions, path traversal exists when processing a message of type 8

01What is this vulnerability?

In affected versions, path traversal exists when processing a message of type 8

02Affected products

Vendor	Product	Versions
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

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-03-21T23:55:23.665Z
• Last modified: 2025-02-25T21:22:03.982Z

09References

• rockwellautomation.custhelp.com — https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640