CVE-2023-27857: Rockwellautomation Thinmanager

High severity, CVSS 7.5. EPSS: 18.3% chance of exploitation in the next 30 days.

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.

Affected products

• Rockwellautomation Thinmanager: from 11.0.0, before 11.0.5 (fixed in 11.0.5); from 11.1.0, before 11.1.5 (fixed in 11.1.5); from 11.2.0, before 11.2.6 (fixed in 11.2.6); from 12.0.0, before 12.0.3 (fixed in 12.0.3); from 12.1.0, before 12.1.4 (fixed in 12.1.4); version 13.0.0 only

Published 2023-03-22. Last modified 2026-06-17.