Out-of-Bounds Read Vulnerability in SIMATIC PCS neo by Siemens
CVE-2025-40798

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-2025-40798?

An out-of-bounds read vulnerability has been identified in the integrated User Management Component (UMC) of SIMATIC PCS neo. This flaw affects all versions of SIMATIC PCS neo V4.1 and V5.0, as well as all versions of the UMC earlier than V2.15.1.3. If exploited, this vulnerability could allow an unauthenticated remote attacker to cause a denial of service condition, impacting the availability and performance of the affected systems.

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-2025-40798 : Out-of-Bounds Read Vulnerability in SIMATIC PCS neo by Siemens