A design flaw in the Trane ComfortLink II SCC firmware version 2.0.2 service allows remote attackers to take complete control of the system.

An exploitable remote code execution vulnerability exists in the Trane ComfortLink II firmware version 2.0.2 in DSS service. An attacker who can connect to the DSS service on the Trane ComfortLink II device can send an overly long REG request that can overflow a fixed size stack buffer, resulting in arbitrary code execution.