CVE-2026-44469 PUBLISHED

Incorrect Default Permissions in CODESYS Development System

Assigner: CERTVDE
Reserved: 06.05.2026 Published: 26.05.2026 Updated: 26.05.2026

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 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
CVSS Score: 8.5

Product Status

Vendor CODESYS
Product CODESYS Development System
Versions Default: unaffected
  • affected from 3.0.0.0 to 3.5.22.20 (excl.)

Credits

  • David Ruscheweyh from SEW-EURODRIVE GmbH & Co KG finder

References

Problem Types

  • CWE-276 Incorrect Default Permissions CWE