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CVE-2026-54800

CVSS 4.8 · Medium EPSS 0.15% · P4

Affected Version Matrix 2

VendorProductVersion RangeStatus
SiemensCPCI85 Central Processing/Communication< V26.20affected
SiemensSICORE Base system< V26.20.0affected
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I. Basic Information for CVE-2026-54800

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application ships with a default configuration that disables all OPC UA security mechanisms. This could allow an attacker to gain unauthorized access and control over critical system functions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的默认资源初始化
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens CPCI85 Central Processing/Communication 配置错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens CPCI85 Central Processing/Communication是德国Siemens公司的一款中央处理及通信设备。 Siemens CPCI85 Central Processing/Communication V26.20之前版本存在配置错误漏洞，该漏洞源于默认配置禁用了所有OPC UA安全机制，导致攻击者可能获得未授权访问并控制关键系统功能。
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

VendorProductAffected VersionsCPESubscribe
SiemensCPCI85 Central Processing/Communication 0 ~ V26.20 -
SiemensSICORE Base system 0 ~ V26.20.0 -

II. Public POCs for CVE-2026-54800

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III. Intelligence Information for CVE-2026-54800

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Vendor Advisories for CVE-2026-54800 (1)

Same Patch Batch · Siemens · 2026-07-09 · 4 CVEs total

CVE-2026-548017.2 HIGHSiemens CPCI85 Central Processing/Communication 授权问题漏洞
CVE-2026-547996.7 MEDIUMSiemens CPCI85 Central Processing/Communication 调试信息泄露漏洞
CVE-2026-547986.5 MEDIUMSiemens CPCI85 Central Processing/Communication 调试信息泄露漏洞

IV. Related Vulnerabilities

Same product: CPCI85 Central Processing/Communication
Same vendor: Siemens
Same weakness: CWE-1188

V. Comments for CVE-2026-54800

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