High severity · published Sep 9, 2025
CVE-2025-40796
A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SIMATIC PCS neo V6.0 (All versions < V6.0 SP1 Update 1), User…
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SIMATIC PCS neo V6.0 (All versions < V6.0 SP1 Update 1), User Management Component (UMC) (All versions < V2.15.1.3). Affected products contain a out-of-bounds read vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to cause a denial of service condition.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SP
SIMATIC PCS neo V4.1 · Siemens
0 · source: vendor
SP
SIMATIC PCS neo V5.0 · Siemens
0 · source: vendor
SP
SIMATIC PCS neo V6.0 · Siemens
before V6.0 SP1 Update 1 · source: vendor
UM
User Management Component (UMC) · Siemens
before V2.15.1.3 · source: vendor
SP
Simatic Pcs Neo · Siemens
4.1; 5.0 · source: NVD
UM
User Management Component · Siemens
before 2.15.1.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-40796
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-40796
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-722410.html
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