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CVE-2026-44469— Incorrect Default Permissions in CODESYS Development System

Quick assessment

Affected
CODESYS CODESYS Development System
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.

CODESYS Development System是德国CODESYS公司的一套用于工业控制器和自动化技术领域的编程工具。 CODESYS Development System存在安全漏洞，该漏洞源于在管理安装期间将安装文件提取到临时目录时使用了不正确的默认权限，低权限本地攻击者可以利用TOCTOU竞争条件，在安装前用恶意文件替换已验证的文件，导致本地权限提升。

CVSS 7.8 · High EPSS 0.12% · P2

Affected Version Matrix 1

VendorProduct Version RangeStatus
CODESYS CODESYS Development System 3.0.0.0< 3.5.22.20 affected
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I. Basic Information for CVE-2026-44469

Vulnerability Information
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Vulnerability Title
Incorrect Default Permissions in CODESYS Development System
Source: CVE Program / CVE List V5
Vulnerability Description
The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time window to replace verified files with malicious ones before installation, resulting in local privilege escalation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
CODESYS Development System 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CODESYS Development System是德国CODESYS公司的一套用于工业控制器和自动化技术领域的编程工具。 CODESYS Development System存在安全漏洞，该漏洞源于在管理安装期间将安装文件提取到临时目录时使用了不正确的默认权限，低权限本地攻击者可以利用TOCTOU竞争条件，在安装前用恶意文件替换已验证的文件，导致本地权限提升。
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
CODESYS CODESYS Development System 3.0.0.0 ~ 3.5.22.20 -

II. Public POCs for CVE-2026-44469

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III. Intelligence Information for CVE-2026-44469

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Vendor Advisories for CVE-2026-44469 (1)

Same Patch Batch · CODESYS · 2026-05-26 · 4 CVEs total

CVE-2026-8046 8.1 HIGH Incorrect Authorization in CODESYS Control
CVE-2026-44468 7.8 HIGH Incorrect Default Permissions in CODESYS Development System
CVE-2026-8047 7.5 HIGH Out-of-bounds Write in CODESYS Control

IV. Related Vulnerabilities

Same product: CODESYS Development System
Same vendor: CODESYS
Same weakness: CWE-276

V. Comments for CVE-2026-44469

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