Local Privilege Escalation Vulnerability in Affected Product by Vendor
CVE-2026-44469

8.5HIGH

Key Information:

Vendor

Codesys

Vendor
CVE Published:
26 May 2026

What is CVE-2026-44469?

The affected product improperly manages the permissions of files extracted to a temporary directory during administrative installation. This flaw allows a low-privileged local attacker to exploit a Time-of-Check to Time-of-Use (TOCTOU) race condition. By doing so, the attacker can replace legitimate files with malicious versions within a narrow window of time before installation, potentially leading to local privilege escalation.

Affected Version(s)

CODESYS Development System 3.0.0.0 < 3.5.22.20

References

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

David Ruscheweyh from SEW-EURODRIVE GmbH & Co KG
.