Out-of-Bounds Read Vulnerability in SIMATIC PCS neo and User Management Component
CVE-2025-40796

8.7HIGH

Key Information:

Vendor

Siemens
Status
Simatic Pcs Neo V4.1
Simatic Pcs Neo V5.0
Simatic Pcs Neo V6.0
User Management Component (umc)
Vendor
CVE Published:
9 September 2025

What is CVE-2025-40796?

An out-of-bounds read vulnerability has been discovered in SIMATIC PCS neo versions and its User Management Component. This flaw may permit an unauthenticated remote attacker to exploit the affected system, leading to a potential denial of service scenario. Addressing this vulnerability is crucial to maintaining system integrity and availability.

Affected Version(s)

SIMATIC PCS neo V4.1 0

SIMATIC PCS neo V5.0 0

SIMATIC PCS neo V6.0 0

References

https://cert-portal.siemens.com/productcert/html/ssa-7224...

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-40796 : Out-of-Bounds Read Vulnerability in SIMATIC PCS neo and User Management Component