CVE-2026-44469

Incorrect Default Permissions in CODESYS Development System

Published May 26, 2026 CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Codesys development System
Vendors & Products Codesys development System
Type Values Removed Values Added
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.
Title Incorrect Default Permissions in CODESYS Development System
First Time appeared Codesys
Codesys codesys Development System
Weaknesses CWE-276
CPEs cpe:2.3:a:codesys:codesys_development_system:*:*:*:*:*:*:*:*
Vendors & Products Codesys
Codesys codesys Development System
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
May 26, 2026, 10:48 AM
Reserved
May 6, 2026, 5:08 PM
Status
Analyzed
Published
May 26, 2026, 8:16 AM
Modified
Jul 24, 2026, 11:10 AM