A vulnerability has been identified in TIA Multiuser Server V14 (All versions), TIA Multiuser Server V15 (All versions < V15.1 Update 8), TIA Project-Server  (All versions < V1.1), TIA Project-Server V16 (All versions), TIA Project-Server V17 (All versions < V17 Update 6). Affected applications contain an untrusted search path vulnerability that could allow an attacker to escalate privileges, when tricking a legitimate user to start the service from an attacker controlled path.

The WinCC server in Siemens SIMATIC WinCC 7.0 through SP3, 7.2 before Update 9, and 7.3 before Update 2; SIMATIC PCS 7 7.1 through SP4, 8.0 through SP2, and 8.1; and TIA Portal 13 before Update 6 allows remote attackers to read arbitrary files via crafted packets.

The WinCC server in Siemens SIMATIC WinCC 7.0 through SP3, 7.2 before Update 9, and 7.3 before Update 2; SIMATIC PCS 7 7.1 through SP4, 8.0 through SP2, and 8.1; and TIA Portal 13 before Update 6 allows remote attackers to execute arbitrary code via crafted packets.

Cross-site scripting (XSS) vulnerability in the HMI web application in Siemens WinCC (TIA Portal) 11 allows remote authenticated users to inject arbitrary web script or HTML via unspecified data.

The HMI web application in Siemens WinCC (TIA Portal) 11 allows remote authenticated users to cause a denial of service (daemon crash) via a crafted HTTP request.

Directory traversal vulnerability in Siemens WinCC (TIA Portal) 11 allows remote authenticated users to read HMI web-application source code and user-defined scripts via a crafted URL.

Cross-site scripting (XSS) vulnerability in the HMI web application in Siemens WinCC (TIA Portal) 11 allows remote attackers to inject arbitrary web script or HTML via a crafted URL.

Siemens WinCC (TIA Portal) 11 uses a reversible algorithm for storing HMI web-application passwords in world-readable and world-writable files, which allows local users to obtain sensitive information by leveraging (1) physical access or (2) Sm@rt Server access.