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CVE-2025-40797

Quick assessment

Affected
Siemens SIMATIC PCS neo V4.1
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Siemens SIMATIC PCS neo是德国西门子（Siemens）公司的一个分布式控制系统。 Siemens SIMATIC PCS neo和Siemens UMC存在缓冲区错误漏洞，该漏洞源于越界读取，可能导致拒绝服务。以下版本受到影响：SIMATIC PCS neo V4.1版本、V5.0版本和UMC V2.15.1.3之前版本。

CVSS 7.5 · High EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
Siemens SIMATIC PCS neo V4.1 < * affected
Siemens SIMATIC PCS neo V5.0 < * affected
Siemens SIMATIC PCS neo V6.0 < V6.0 SP1 Update 1 affected
Siemens User Management Component (UMC) < V2.15.1.3 affected
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I. Basic Information for CVE-2025-40797

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC PCS neo 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC PCS neo是德国西门子（Siemens）公司的一个分布式控制系统。 Siemens SIMATIC PCS neo和Siemens UMC存在缓冲区错误漏洞，该漏洞源于越界读取，可能导致拒绝服务。以下版本受到影响：SIMATIC PCS neo V4.1版本、V5.0版本和UMC V2.15.1.3之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Siemens SIMATIC PCS neo V4.1 0 ~ * -
Siemens SIMATIC PCS neo V5.0 0 ~ * -
Siemens SIMATIC PCS neo V6.0 0 ~ V6.0 SP1 Update 1 -
Siemens User Management Component (UMC) 0 ~ V2.15.1.3 -

II. Public POCs for CVE-2025-40797

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III. Intelligence Information for CVE-2025-40797

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Vendor Advisories for CVE-2025-40797 (1)

Same Patch Batch · Siemens · 2025-09-09 · 9 CVEs total

CVE-2025-40795 9.8 CRITICAL Siemens SIMATIC PCS neo 安全漏洞
CVE-2025-40804 9.1 CRITICAL Siemens SIMATIC Virtualization as a Service 安全漏洞
CVE-2025-40796 7.5 HIGH Siemens SIMATIC PCS neo 缓冲区错误漏洞
CVE-2025-40798 7.5 HIGH Siemens SIMATIC PCS neo 缓冲区错误漏洞
CVE-2025-40594 6.3 MEDIUM Siemens多款产品 安全漏洞
CVE-2025-40757 5.3 MEDIUM Siemens APOGEE PXC Series和Siemens TALON TC Series 信息泄露漏洞
CVE-2025-40802 3.1 LOW Siemens RUGGEDCOM RST2428P 资源管理错误漏洞
CVE-2025-40803 3.1 LOW Siemens RUGGEDCOM RST2428P 信息泄露漏洞

IV. Related Vulnerabilities

Same product: SIMATIC PCS neo V4.1
Same vendor: Siemens
Same weakness: CWE-125

V. Comments for CVE-2025-40797

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