CVE-2023-32737 MEDIUM

CVE-2023-32737

Vendor Siemens
Product SIMATIC STEP 7 Safety V18
Weakness CWE-502 · Unsafe deserialization
Published July 9, 2024
Last update August 27, 2025

CVSS base score

6.3/10
Attack vector Local
Attack complexity High
Privileges required High
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 9, 2024 CVE published
August 27, 2025 Record updated