Rockwell Local Privilege Escalation and denial-of-service Vulnerability in ThinManager®
Monitor7.8SD1727Apr 15, 2025
Summary
A local privilege escalation vulnerability exists in Rockwell ThinManager that allows an attacker with local user-level access to escalate to system privileges without authentication. The vulnerability also enables denial-of-service attacks against the ThinManager service. No patch is currently available from Rockwell Automation. The flaw affects all versions of ThinManager and is tracked under ROCKWELL SD1727 with CVSS 7.8 (High).
What this means
What could happen
An attacker with local access to a ThinManager workstation could escalate privileges to system level, potentially modifying HMI configurations, altering process controls, or disrupting visualization of plant operations. Denial-of-service conditions could interrupt monitoring and control of critical equipment.
Who's at risk
Operators and IT staff at water utilities, electric utilities, and manufacturing plants using Rockwell ThinManager for HMI visualization and control should assess their deployment. ThinManager is commonly used to remotely monitor and control PLCs and other control devices in industrial environments. Any facility where an operator workstation is shared among multiple users or where local console access is not strictly controlled faces elevated risk.
How it could be exploited
An attacker with local user account access to a ThinManager workstation exploits a privilege escalation flaw to gain system-level privileges. From there, they can modify HMI configurations, interfere with process control commands sent to PLCs, or crash the ThinManager service to disrupt operator visibility and control.
Prerequisites
- Local user account on the ThinManager workstation
- Physical or remote desktop access to the machine
- No elevated privileges required to trigger the vulnerability
no patch availablelocal privilege escalationaffects HMI and operator controldenial-of-service capabilitylow attack complexity
Exploitability
Low exploit probability (EPSS 0.1%)
Affected products (1)
ProductAffected VersionsFix Status
Local Privilege EscalationAll versionsNo fix yet
Remediation & Mitigation
0/4
Do now
0/2HARDENINGRestrict local user access to ThinManager workstations to trusted personnel only; enforce strong authentication and account provisioning controls
HARDENINGImplement application whitelisting and disable unnecessary local accounts on ThinManager systems
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HARDENINGMonitor ThinManager process logs for unusual privilege escalation attempts or service crashes indicative of DoS activity
Long-term hardening
0/1HARDENINGSegment ThinManager workstations on a dedicated network with strict inbound/outbound access controls to limit lateral movement if a workstation is compromised
CVEs (2)
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