HarborGuard / CVE
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HIGHCVE-2026-44469Published Modified CNA CERTVDE

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

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.

Metrics

CVSS v4.0
8.5
Severity
HIGH
Fixed in
3.5.22.20
Affected Products
1

Fix available

3.5.22.20
Affected packages
  • CODESYS / CODESYS Development System
    < 3.5.22.20 (from 3.0.0.0)
CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References