CVE-2025-40796
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I. Basic Information for CVE-2025-40796
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
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), 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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
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 ~ * | - | |
| Siemens | User Management Component (UMC) | 0 ~ V2.15.1.3 | - |
II. Public POCs for CVE-2025-40796
| # | POC Description | Source Link | Shenlong Link |
|---|
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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-2025-40797 | 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 weakness: CWE-125
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Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2025-40796
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