CVE-2023-27857

Name: CVE-2023-27857
Creator: NVD / NIST
Published: 2023-03-22T02:15:48.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 18.34%

Last modified Jun 17, 2026

CVE-2023-27857 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In affected versions, a heap-based buffer over-read condition occurs when the message field indicates more data than is present in the message field in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker can exploit this vulnerability to crash ThinServer.exe due to a read access violation. . EPSS estimates a 18.34% chance of exploitation in the next 30 days.

Description

In affected versions, a heap-based buffer over-read condition occurs when the message field indicates more data than is present in the message field in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker can exploit this vulnerability to crash ThinServer.exe due to a read access violation.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

18.34%

96.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
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, < 12.0.3
Rockwellautomation	Thinmanager	>= 12.1.0, < 12.1.4
Rockwellautomation	Thinmanager	13.0.0

References

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

Timeline

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

Frequently Asked Questions

What is CVE-2023-27857?

How severe is CVE-2023-27857?

CVE-2023-27857 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 18.34% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27857?

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-2023-27857?

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

Scan your code now

Source: NVD / NIST