A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl.

Summary

A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V17 Update 4), SIMATIC HMI KTP Mobile Panels (All versions < V17 Update 4), SIMATIC HMI KTP1200 Basic (All versions < V17 Update 5), SIMATIC HMI KTP400 Basic (All versions < V17 Update 5), SIMATIC HMI KTP700 Basic (All versions < V17 Update 5), SIMATIC HMI KTP900 Basic (All versions < V17 Update 5), SIPLUS HMI KTP1200 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP400 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP700 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP900 BASIC (All versions < V17 Update 5). Affected devices do not properly validate input sent to certain services over TCP. This could allow an unauthenticated remote attacker to cause a permanent denial of service condition (requiring a device reboot) by sending specially crafted TCP packets.

Timeline

1. Oct 11, 2022, 12:00 AM UTCCVE published
2. May 20, 2025, 1:54 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: partial

3. Jun 2, 2026, 6:51 PM UTCRecord last updated

Affected versions

• Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants)

  All versions < V17 Update 4

• Siemens SIMATIC HMI KTP Mobile Panels

  All versions < V17 Update 4

• Siemens SIMATIC HMI KTP1200 Basic

  All versions < V17 Update 5

• Siemens SIMATIC HMI KTP400 Basic

  All versions < V17 Update 5

• Siemens SIMATIC HMI KTP700 Basic

  All versions < V17 Update 5

• Siemens SIMATIC HMI KTP900 Basic

  All versions < V17 Update 5

• Siemens SIPLUS HMI KTP1200 BASIC

  All versions < V17 Update 5

• Siemens SIPLUS HMI KTP400 BASIC

  All versions < V17 Update 5

• Siemens SIPLUS HMI KTP700 BASIC

  All versions < V17 Update 5

• Siemens SIPLUS HMI KTP900 BASIC

  All versions < V17 Update 5

References 1