What is the severity of CVE-2025-23403?

CVE-2025-23403 is classified as a high-severity vulnerability due to its potential impact on system integrity.

How do I fix CVE-2025-23403?

To remediate CVE-2025-23403, update the affected SIMATIC IPC DiagBase and SIMATIC IPC DiagMonitor software to the latest versions provided by Siemens.

What systems are affected by CVE-2025-23403?

CVE-2025-23403 affects all versions of SIMATIC IPC DiagBase and SIMATIC IPC DiagMonitor.

What type of attack is possible with CVE-2025-23403?

CVE-2025-23403 could allow authenticated attackers to load vulnerable drivers, leading to potential system exploitation.

Is user authentication sufficient to mitigate CVE-2025-23403?

No, proper restriction of user permissions for the registry key is essential to mitigate CVE-2025-23403, even for authenticated users.

Vulnerability/
CVE-2025-23403

high

7.3

CWE

732

EPSS

0.043%

11/2/2025

12/2/2025

CVE-2025-23403

First published: Tue Feb 11 2025(Updated: )

A vulnerability has been identified in SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions). The affected device do not properly restrict the user permission for the registry key. This could allow an authenticated attacker to load vulnerable drivers into the system leading to privilege escalation or bypassing endpoint protection and other security measures.

Credit: productcert@siemens.com

Affected Software	Affected Version	How to fix
Siemens SIMATIC IPC DiagBase Firmware	<=
siemens SIMATIC IPC DiagMonitor firmware	<=

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Reference Links

https://cert-portal.siemens.com/productcert/html/ssa-369369.html

Frequently Asked Questions

What is the severity of CVE-2025-23403?
CVE-2025-23403 is classified as a high-severity vulnerability due to its potential impact on system integrity.
How do I fix CVE-2025-23403?
To remediate CVE-2025-23403, update the affected SIMATIC IPC DiagBase and SIMATIC IPC DiagMonitor software to the latest versions provided by Siemens.
What systems are affected by CVE-2025-23403?
CVE-2025-23403 affects all versions of SIMATIC IPC DiagBase and SIMATIC IPC DiagMonitor.
What type of attack is possible with CVE-2025-23403?
CVE-2025-23403 could allow authenticated attackers to load vulnerable drivers, leading to potential system exploitation.
Is user authentication sufficient to mitigate CVE-2025-23403?
No, proper restriction of user permissions for the registry key is essential to mitigate CVE-2025-23403, even for authenticated users.

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