ICS Advisories

Risk evaluation

The vulnerability enables unauthorized access to the Reboot OS function within the Remote Transport Service, allowing an attacker to trigger a system reboot without the required authentication. This functionality initiates a system reboot on the target machine. However, remote exploitation of this vulnerability is not feasible unless the attacker has already gained access to the network where the affected ABB Ability™ zenon system is deployed. At the time of writing, there is no evidence that this vulnerability is being actively exploited in the wild.

Mitigation summary

- Restrict network access to systems with the ABB zenon Software Platform installed. - Ensure that access to a system is restricted by implementing access controls to minimize the risk of unauthorized access. - Assess the necessity of the ABB zenon Remote Transport functionality. - Ensure that if the Remote Transport functionality is not used, the zensyssrv.exe (ABB zenon System Service) is stopped or terminated. The zensyssrv.exe can also be stopped or terminated after authorized use to prevent this vulnerability.