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CVE-2026-44469

Incorrect Default Permissions in CODESYS Development System

Published: May 26, 2026Updated: May 26, 2026 Sources: CVE List
NVD MITRE
7.8CVSS
HIGH

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.

EPSS Score
0.0%
Top 98.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-276CWE-276 Incorrect Default Permissions

Affected Products

CODESYS Development System
CODESYS

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://www.certvde.com/en/advisories/VDE-2026-055/
certvde.com

Timeline

Published
May 26, 2026
Last Updated
May 26, 2026

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