CVE-2017-6867: Siemens SIMATIC Wincc

Medium severity, CVSS 4.9. EPSS: 1.9% chance of exploitation in the next 30 days.

A vulnerability was discovered in Siemens SIMATIC WinCC (V7.3 before Upd 11 and V7.4 before SP1), SIMATIC WinCC Runtime Professional (V13 before SP2 and V14 before SP1), SIMATIC WinCC (TIA Portal) Professional (V13 before SP2 and V14 before SP1) that could allow an authenticated, remote attacker who is member of the "administrators" group to crash services by sending specially crafted messages to the DCOM interface.

Affected products

• Siemens SIMATIC Wincc: version 7.3 only; version 7.4 only
• Siemens SIMATIC Wincc (tia Portal): version 13 only; version 14 only
• Siemens SIMATIC Wincc Runtime: version 13 only; version 14 only

Published 2017-05-11. Last modified 2026-06-17.