A vulnerability has been identified in SIMATIC S7-PLCSIM V17 (All versions), SIMATIC STEP 7 V17 (All versions < V17 Update 9), SIMATIC STEP

Summary

A vulnerability has been identified in SIMATIC S7-PLCSIM V17 (All versions), SIMATIC STEP 7 V17 (All versions < V17 Update 9), SIMATIC STEP 7 V18 (All versions < V18 Update 6), SIMATIC STEP 7 V19 (All versions < V19 Update 4), SIMATIC STEP 7 V20 (All versions < V20 Update 4), SIMATIC WinCC V17 (All versions < V17 Update 9), SIMATIC WinCC V18 (All versions < V18 Update 6), SIMATIC WinCC V19 (All versions < V19 Update 4), SIMATIC WinCC V20 (All versions < V20 Update 4), SIMOCODE ES V17 (All versions), SIMOCODE ES V18 (All versions), SIMOCODE ES V19 (All versions), SIMOCODE ES V20 (All versions), SIMOTION SCOUT TIA V5.4 (All versions), SIMOTION SCOUT TIA V5.5 (All versions), SIMOTION SCOUT TIA V5.6 (All versions < V5.6 SP1 HF7), SIMOTION SCOUT TIA V5.7 (All versions), SINAMICS Startdrive V17 (All versions), SINAMICS Startdrive V18 (All versions), SINAMICS Startdrive V19 (All versions), SINAMICS Startdrive V20 (All versions), SIRIUS Safety ES V17 (TIA Portal) (All versions), SIRIUS Safety ES V18 (TIA Portal) (All versions), SIRIUS Safety ES V19 (TIA Portal) (All versions), SIRIUS Safety ES V20 (TIA Portal) (All versions), SIRIUS Soft Starter ES V17 (TIA Portal) (All versions), SIRIUS Soft Starter ES V18 (TIA Portal) (All versions), SIRIUS Soft Starter ES V19 (TIA Portal) (All versions), SIRIUS Soft Starter ES V20 (TIA Portal) (All versions), TIA Portal Cloud V17 (All versions), TIA Portal Cloud V18 (All versions), TIA Portal Cloud V19 (All versions < V5.2.1.1), TIA Portal Cloud V20 (All versions < V5.2.2.2). Affected products do not properly sanitize stored security properties when parsing project files. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.

Timeline

1. Aug 12, 2025, 11:17 AM UTCCVE published
2. Aug 12, 2025, 6:27 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Oct 13, 2026, 9:18 AM UTCRecord last updated

Affected versions

• Siemens SIMATIC S7-PLCSIM V17

  fixed in *

• Siemens SIMATIC STEP 7 V17

  fixed in V17 Update 9

• Siemens SIMATIC STEP 7 V18

  fixed in V18 Update 6

• Siemens SIMATIC STEP 7 V19

  fixed in V19 Update 4

• Siemens SIMATIC STEP 7 V20

  fixed in V20 Update 4

• Siemens SIMATIC WinCC V17

  fixed in V17 Update 9

• Siemens SIMATIC WinCC V18

  fixed in V18 Update 6

• Siemens SIMATIC WinCC V19

  fixed in V19 Update 4

• Siemens SIMATIC WinCC V20

  fixed in V20 Update 4

• Siemens SIMOCODE ES V17

  fixed in *

• Siemens SIMOCODE ES V18

  fixed in *

• Siemens SIMOCODE ES V19

  fixed in *

• Siemens SIMOCODE ES V20

  fixed in *

• Siemens SIMOTION SCOUT TIA V5.4

  fixed in *

• Siemens SIMOTION SCOUT TIA V5.5

  fixed in *

• Siemens SIMOTION SCOUT TIA V5.6

  fixed in V5.6 SP1 HF7

• Siemens SIMOTION SCOUT TIA V5.7

  fixed in *

• Siemens SINAMICS Startdrive V17

  fixed in *

• Siemens SINAMICS Startdrive V18

  fixed in *

• Siemens SINAMICS Startdrive V19

  fixed in *

• Siemens SINAMICS Startdrive V20

  fixed in *

• Siemens SIRIUS Safety ES V17 (TIA Portal)

  fixed in *

• Siemens SIRIUS Safety ES V18 (TIA Portal)

  fixed in *

• Siemens SIRIUS Safety ES V19 (TIA Portal)

  fixed in *

• Siemens SIRIUS Safety ES V20 (TIA Portal)

  fixed in *

• Siemens SIRIUS Soft Starter ES V17 (TIA Portal)

  fixed in *

• Siemens SIRIUS Soft Starter ES V18 (TIA Portal)

  fixed in *

• Siemens SIRIUS Soft Starter ES V19 (TIA Portal)

  fixed in *

• Siemens SIRIUS Soft Starter ES V20 (TIA Portal)

  fixed in *

• Siemens TIA Portal Cloud V17

  fixed in *

• Siemens TIA Portal Cloud V18

  fixed in *

• Siemens TIA Portal Cloud V19

  fixed in V5.2.1.1

• Siemens TIA Portal Cloud V20

  fixed in V5.2.2.2

References 1