CVE-2025-40759A 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 (Al…
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It affects Siemens SIMATIC S7-PLCSIM V17 and 32 other products. Add what you run to find out whether that includes you.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-502
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- siemens
- NVD analysis
- Deferred
- Record last updated
- Oct 13, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
Siemens SIMATIC S7-PLCSIM V17 siemens:simatic_s7_plcsim_v17 (from the name) | all versions | CNA record |
Siemens SIMATIC STEP 7 V17 siemens:simatic_step_7_v17 (from the name) | before V17 Update 9 | CNA record |
Siemens SIMATIC STEP 7 V18 siemens:simatic_step_7_v18 (from the name) | before V18 Update 6 | CNA record |
Siemens SIMATIC STEP 7 V19 siemens:simatic_step_7_v19 (from the name) | before V19 Update 4 | CNA record |
Siemens SIMATIC STEP 7 V20 siemens:simatic_step_7_v20 (from the name) | before V20 Update 4 | CNA record |
Siemens SIMATIC WinCC V17 siemens:simatic_wincc_v17 (from the name) | before V17 Update 9 | CNA record |
Siemens SIMATIC WinCC V18 siemens:simatic_wincc_v18 (from the name) | before V18 Update 6 | CNA record |
Siemens SIMATIC WinCC V19 siemens:simatic_wincc_v19 (from the name) | before V19 Update 4 | CNA record |
Siemens SIMATIC WinCC V20 siemens:simatic_wincc_v20 (from the name) | before V20 Update 4 | CNA record |
Siemens SIMOCODE ES V17 siemens:simocode_es_v17 (from the name) | all versions | CNA record |
Siemens SIMOCODE ES V18 siemens:simocode_es_v18 (from the name) | all versions | CNA record |
Siemens SIMOCODE ES V19 siemens:simocode_es_v19 (from the name) | all versions | CNA record |
Siemens SIMOCODE ES V20 siemens:simocode_es_v20 (from the name) | all versions | CNA record |
Siemens SIMOTION SCOUT TIA V5.4 siemens:simotion_scout_tia_v5.4 (from the name) | all versions | CNA record |
Siemens SIMOTION SCOUT TIA V5.5 siemens:simotion_scout_tia_v5.5 (from the name) | all versions | CNA record |
Siemens SIMOTION SCOUT TIA V5.6 siemens:simotion_scout_tia_v5.6 (from the name) | before V5.6 SP1 HF7 | CNA record |
Siemens SIMOTION SCOUT TIA V5.7 siemens:simotion_scout_tia_v5.7 (from the name) | all versions | CNA record |
Siemens SINAMICS Startdrive V17 siemens:sinamics_startdrive_v17 (from the name) | all versions | CNA record |
Siemens SINAMICS Startdrive V18 siemens:sinamics_startdrive_v18 (from the name) | all versions | CNA record |
Siemens SINAMICS Startdrive V19 siemens:sinamics_startdrive_v19 (from the name) | all versions | CNA record |
Siemens SINAMICS Startdrive V20 siemens:sinamics_startdrive_v20 (from the name) | all versions | CNA record |
Siemens SIRIUS Safety ES V17 (TIA Portal) siemens:sirius_safety_es_v17_tia_portal (from the name) | all versions | CNA record |
Siemens SIRIUS Safety ES V18 (TIA Portal) siemens:sirius_safety_es_v18_tia_portal (from the name) | all versions | CNA record |
Siemens SIRIUS Safety ES V19 (TIA Portal) siemens:sirius_safety_es_v19_tia_portal (from the name) | all versions | CNA record |
Siemens SIRIUS Safety ES V20 (TIA Portal) siemens:sirius_safety_es_v20_tia_portal (from the name) | all versions | CNA record |
Siemens SIRIUS Soft Starter ES V17 (TIA Portal) siemens:sirius_soft_starter_es_v17_tia_portal (from the name) | all versions | CNA record |
Siemens SIRIUS Soft Starter ES V18 (TIA Portal) siemens:sirius_soft_starter_es_v18_tia_portal (from the name) | all versions | CNA record |
Siemens SIRIUS Soft Starter ES V19 (TIA Portal) siemens:sirius_soft_starter_es_v19_tia_portal (from the name) | all versions | CNA record |
Siemens SIRIUS Soft Starter ES V20 (TIA Portal) siemens:sirius_soft_starter_es_v20_tia_portal (from the name) | all versions | CNA record |
Siemens TIA Portal Cloud V17 siemens:tia_portal_cloud_v17 (from the name) | all versions | CNA record |
Siemens TIA Portal Cloud V18 siemens:tia_portal_cloud_v18 (from the name) | all versions | CNA record |
Siemens TIA Portal Cloud V19 siemens:tia_portal_cloud_v19 (from the name) | before V5.2.1.1 | CNA record |
Siemens TIA Portal Cloud V20 siemens:tia_portal_cloud_v20 (from the name) | before V5.2.2.2 | CNA record |
References
- https://cert-portal.siemens.com/productcert/html/ssa-493396.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.