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CVE-2025-40759

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), SIMATIC STEP 7 V19 (All versions < ...

Published: Aug 12, 2025Updated: Dec 9, 2025 Sources: CVE List NVD BDU csafCWE-502
7.8HIGH
NVD MITRE
EPSS Score
0.2%
Top 91.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Affected products do not properly sanitize user-controllable input when parsing project files. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-502

Affected Products

Siemens AG
commercial·DEaka Siemens
SIMATIC S7-PLCSIM Advanced
ICS / OT / IoT
SIMATIC STEP 7
ICS / OT / IoT
SINAMICS Startdrive
ICS / OT / IoT
SIMATIC WinCC
ICS / OT / IoT
SIMOTION SCOUT TIA
ICS / OT / IoT
SIMOCODE ES
ICS / OT / IoT
SIRIUS Safety ES
ICS / OT / IoT
Soft Starter ES
ICS / OT / IoT
and 34 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/csaf/ssa-493396.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-493396.html
cert-portal.siemens.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-11.json
raw.githubusercontent.com
and 7 more references View all →

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