CVE-2026-44469

HIGH

Incorrect Default Permissions in CODESYS Development System

Title source: cna
STIX 2.1

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.

References (1)

Core 1

Scores

CVSS v3 7.8
EPSS 0.0001
EPSS Percentile 1.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-276
Status published
Products (1)
CODESYS/CODESYS Development System 3.0.0.0 - 3.5.22.20
Published May 26, 2026
Tracked Since May 26, 2026