CVE-2026-44469
Incorrect Default Permissions in CODESYS Development System
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-276 |
| Vendor | codesys |
| Product | codesys development system |
| Published | May 26, 2026 |
| Last Updated | May 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
CODESYS / CODESYS Development System
3.0.0.0 < 3.5.22.20
References
Credits
David Ruscheweyh from SEW-EURODRIVE GmbH & Co KG