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CVE-2026-34223

Quick assessment

Affected
Siemens Desigo CC ClickOnce Client V6
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 Desigo CC ClickOnce Client V6是德国Siemens公司的一款楼宇自动化客户端软件。 Siemens Desigo CC ClickOnce Client V6（所有版本）、Desigo CC ClickOnce Client V7（所有版本）、Desigo CC family V8（所有版本）、Desigo CC family V9（所有版本）、Desigo CC Flex Client V6（所有版本）、Desigo CC Flex Client V7（所有版

CVSS 8.2 · High EPSS 0.19% · P9

Affected Version Matrix 8

VendorProduct Version RangeStatus
Siemens Desigo CC ClickOnce Client V6 < * affected
Siemens Desigo CC ClickOnce Client V7 < * affected
Siemens Desigo CC family V8 < * unaffected
Siemens Desigo CC family V9 < * unaffected
Siemens Desigo CC Flex Client V6 < * unaffected
Siemens Desigo CC Flex Client V7 < * unaffected
Siemens Desigo CC Installed Client V6 < * affected
Siemens Desigo CC Installed Client V7 < * affected
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I. Basic Information for CVE-2026-34223

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in Desigo CC ClickOnce Client V6 (All versions), Desigo CC ClickOnce Client V7 (All versions), Desigo CC family V8 (All versions), Desigo CC family V9 (All versions), Desigo CC Flex Client V6 (All versions), Desigo CC Flex Client V7 (All versions), Desigo CC Installed Client V6 (All versions), Desigo CC Installed Client V7 (All versions). The affected application is vulnerable to Client Code Execution (CCE) due to insufficient input validation when handling scripts embedded within user-defined graphics documents. Specifically, when the script within a graphics document is designed or modified by an attacker to include malicious commands. When a user opens a compromised graphics document, the embedded script is executed on the client application instance, allowing an attacker to write arbitrary files to the client's operating system. Successful exploitation requires an attacker to craft a malicious graphics document and entice a user with sufficient privileges to display it. This could lead to compromise of the client operating system and potential lateral movement within the organization.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens Desigo CC ClickOnce Client V6 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens Desigo CC ClickOnce Client V6是德国Siemens公司的一款楼宇自动化客户端软件。 Siemens Desigo CC ClickOnce Client V6（所有版本）、Desigo CC ClickOnce Client V7（所有版本）、Desigo CC family V8（所有版本）、Desigo CC family V9（所有版本）、Desigo CC Flex Client V6（所有版本）、Desigo CC Flex Client V7（所有版
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 Desigo CC ClickOnce Client V6 0 ~ * -
Siemens Desigo CC ClickOnce Client V7 0 ~ * -
Siemens Desigo CC family V8 0 ~ * -
Siemens Desigo CC family V9 0 ~ * -
Siemens Desigo CC Flex Client V6 0 ~ * -
Siemens Desigo CC Flex Client V7 0 ~ * -
Siemens Desigo CC Installed Client V6 0 ~ * -
Siemens Desigo CC Installed Client V7 0 ~ * -

II. Public POCs for CVE-2026-34223

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III. Intelligence Information for CVE-2026-34223

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Vendor Advisories for CVE-2026-34223 (1)

Same Patch Batch · Siemens · 2026-09-08 · 13 CVEs total

CVE-2026-62645 9.8 CRITICAL Siemens Reyrolle 7SR5 授权问题漏洞
CVE-2026-50093 9.0 CRITICAL Siemens Siveillance Control Pro 任意文件上传漏洞
CVE-2026-62650 8.8 HIGH Siemens Reyrolle 7SR5 授权问题漏洞
CVE-2026-67367 8.6 HIGH Siemens SIMOVE Fleetmanager 路径遍历漏洞
CVE-2026-62649 7.5 HIGH Siemens Reyrolle 7SR5 资源管理错误漏洞
CVE-2026-62648 7.5 HIGH Siemens Reyrolle 7SR5 缓冲区错误漏洞
CVE-2026-62646 7.4 HIGH Siemens Reyrolle 7SR5 加密问题漏洞
CVE-2026-62647 7.4 HIGH Siemens Reyrolle 7SR5 输入验证错误漏洞
CVE-2026-62653 6.8 MEDIUM Siemens Reyrolle 7SR5 缓冲区错误漏洞
CVE-2026-62654 6.8 MEDIUM Siemens Reyrolle 7SR5 软件供应链问题漏洞
CVE-2026-58113 6.1 MEDIUM Siemens Teamcenter V2412 跨站脚本漏洞
CVE-2026-62652 5.3 MEDIUM Siemens Reyrolle 7SR5 调试信息泄露漏洞

IV. Related Vulnerabilities

Same vendor: Siemens
Same weakness: CWE-94

V. Comments for CVE-2026-34223

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