IM
IronMonkey Threat Research

CVE-2025-40795 CRITICAL

Published: 2025-09-09 | Last Modified: 2026-06-09 | Status: Modified

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 stack-based buffer overflow vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to execute arbitrary code or to cause a denial of service condition.

CVSS Metrics

Base Score: 9.8 (CRITICAL)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactHIGH
Availability ImpactHIGH

Source: [email protected]

Type: Secondary

Exploitability Score: 3.9

Impact Score: 5.9

Base Score: 9.3 (CRITICAL)

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack VectorNETWORK
Attack ComplexityLOW
Attack RequirementsNONE
Privileges RequiredNONE
User InteractionNONE
Vulnerability ConfidentialityHIGH
Vulnerability IntegrityHIGH
Vulnerability AvailabilityHIGH
Subsequent ConfidentialityNONE
Subsequent IntegrityNONE
Subsequent AvailabilityNONE

Source: [email protected]

Type: Secondary

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-121

Affected Products

Vendor Product Version Update Type
siemens simatic_pcs_neo 4.1 <built-in method update of dict object at 0x7d1e64be0bc0> Application
siemens simatic_pcs_neo 5.0 <built-in method update of dict object at 0x7d1ebcec0dc0> Application
siemens user_management_component * <built-in method update of dict object at 0x7d1e357b0b00> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:siemens:simatic_pcs_neo:4.1:*:*:*:*:*:*:*
Yes cpe:2.3:a:siemens:simatic_pcs_neo:5.0:*:*:*:*:*:*:*
Yes cpe:2.3:a:siemens:user_management_component:*:*:*:*:*:*:*:*

References

Notification
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