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CVE-2023-32737

MEDIUM
6.3
CVSS Score
Published: July 9, 2024 at 12:04 PM UTC
Updated: June 17, 2026 at 05:59 AM UTC
2 products affected across 1 vendorSIMATIC Step 7SIMATIC STEP 7 Safety

Using SIMATIC STEP 7 Safety V18 by Siemens?

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions < V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

SIMATIC Step 7· Siemens
60%
v < 18
Affected range stops below 18, so it looks safe — our inference, not a vendor statement
SIMATIC STEP 7 Safety· Siemens
60%
v < V18 Update 2
Affected range stops below V18 Update 2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: [email protected]
https://cert-portal.siemens.com/productcert/html/ssa-313039.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMsiemens
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-502

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