CVE-2023-27855

Name: CVE-2023-27855
Creator: NVD / NIST
Published: 2023-03-22T00:15:12.67+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 13.45%

Last modified Jun 17, 2026

CVE-2023-27855 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In affected versions, a path traversal exists when processing a message in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker could potentially exploit this vulnerability to upload arbitrary files to any directory on the disk drive where ThinServer.exe is installed. EPSS estimates a 13.45% chance of exploitation in the next 30 days.

Description

In affected versions, a path traversal exists when processing a message in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker could potentially exploit this vulnerability to upload arbitrary files to any directory on the disk drive where ThinServer.exe is installed. The attacker could overwrite existing executable files with attacker-controlled, malicious contents, potentially causing remote code execution.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

13.45%

96.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rockwellautomation	Thinmanager	>= 6.0.0, <= 10.0.2
Rockwellautomation	Thinmanager	>= 11.0.0, <= 11.0.5
Rockwellautomation	Thinmanager	>= 11.1.0, <= 11.1.5
Rockwellautomation	Thinmanager	>= 11.2.0, <= 11.2.6
Rockwellautomation	Thinmanager	>= 12.0.0, <= 12.0.4
Rockwellautomation	Thinmanager	>= 12.1.0, <= 12.1.5
Rockwellautomation	Thinmanager	13.0.0
Rockwellautomation	Thinmanager	13.0.1

References

https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640Permissions Required, Vendor Advisory
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640Permissions Required, Vendor Advisory

Timeline

Published: Mar 22, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-27855?

How severe is CVE-2023-27855?

CVE-2023-27855 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 13.45% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27855?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-27855?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST