PT-2026-43197 · Codesys · Codesys Development System

David Ruscheweyh · CVE-2026-44469 · Published 2026-05-26 · Updated 2026-05-29

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions CODESYS Development System (affected versions not specified)

Description The software extracts installation files to a temporary directory using incorrect default permissions during administrative installation. This allows a low-privileged local attacker to exploit a TOCTOU (Time-of-Check to Time-of-Use) race condition—a scenario where a system checks a condition and then uses the result, but the condition changes between the check and the use—to replace verified files with malicious ones before the installation completes, leading to local privilege escalation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

CVE-2026-44469

Affected Products

Codesys Development System

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-44469 · Security Note
• https://twitter.com/dailycve/status/2060188136240509351 · Twitter Post
• https://t.me/CVEtracker/54962 · Telegram Post
• https://certvde.com/en/advisories/VDE-2026-055 · Note