CVE-2025-40795
Full vulnerability record from the local CVENow database.
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.
Severity
CRITICAL
CVSS score
9.3
(v4.0)
Vulnerability status
Modified
Source identifier
Published
2025-09-09 09:15:37.343000
Last modified
2026-10-23 22:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-40795",
"sourceIdentifier": "[email protected]",
"published": "2025-09-09T09:15:37.343",
"lastModified": "2026-10-23T22:10:00.160",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Se ha identificado una vulnerabilidad en SIMATIC PCS neo V4.1 (Todas las versiones), SIMATIC PCS neo V5.0 (Todas las versiones), SIMATIC PCS neo V6.0 (Todas las versiones), Componente de Gestión de Usuarios (UMC) (Todas las versiones anteriores a V2.15.1.3). Los productos afectados contienen una vulnerabilidad de desbordamiento de búfer basado en pila en el componente UMC integrado. Esto podría permitir a un atacante remoto no autenticado ejecutar código arbitrario o causar una condición de denegación de servicio."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Siemens",
"product": "SIMATIC PCS neo V4.1",
"defaultStatus": "unknown",
"versions": [
{
"version": "0",
"lessThan": "*",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Siemens",
"product": "SIMATIC PCS neo V5.0",
"defaultStatus": "unknown",
"versions": [
{
"version": "0",
"lessThan": "*",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Siemens",
"product": "SIMATIC PCS neo V6.0",
"defaultStatus": "unknown",
"versions": [
{
"version": "0",
"lessThan": "V6.0 SP1 Update 1",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Siemens",
"product": "User Management Component (UMC)",
"defaultStatus": "unknown",
"versions": [
{
"version": "0",
"lessThan": "V2.15.1.3",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "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",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2025-09-09T19:35:09.103555Z",
"id": "CVE-2025-40795",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-121"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:siemens:simatic_pcs_neo:4.1:*:*:*:*:*:*:*",
"matchCriteriaId": "3F0A4753-2049-4462-BE3C-78E60548E144"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:siemens:simatic_pcs_neo:5.0:*:*:*:*:*:*:*",
"matchCriteriaId": "03D9BFA4-6205-483C-A3C9-AB708BF2FDDA"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:siemens:user_management_component:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.15.1.3",
"matchCriteriaId": "5E8A8395-D7FF-4C89-8BCC-9B3B4BF72A92"
}
]
}
]
}
],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-722410.html",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
}
]
}