CVE-2026-44468

Local privilege escalation via writable bootstrap file

Published May 26, 2026 · Updated May 26, 2026

Local privilege escalation in CODESYS Development System before 3.5.22.20 allows local users to install arbitrary components. PackageManager and IPM create an overly permissive temporary directory during administrative package or add-on installation, allowing a low-privileged user to alter the bootstrap file that defines deployed components. The installer applies that attacker-controlled bootstrap file with elevated administrative privileges, enabling arbitrary file installation and compromise of the underlying Windows host.

CVSS severity8.5
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Local privilege escalation in CODESYS Development System before 3.5.22.20 allows local users to install arbitrary components. PackageManager and IPM create an overly permissive temporary directory during administrative package or add-on installation, allowing a low-privileged user to alter the bootstrap file that defines deployed components. The installer applies that attacker-controlled bootstrap file with elevated administrative privileges, enabling arbitrary file installation and compromise of the underlying Windows host.

The record

CVE
CVE-2026-44468
Published
May 26, 2026
Updated
May 26, 2026
Vendor
CODESYS GmbH
Product
CODESYS Development System
Classifications
CWE-276, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.0.0 <3.5.22.20

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

CODESYS GmbH · CODESYS Development Systemversion=3.0.0.0 <3.5.22.20

Published CVSS scores

7.8CERT@VDECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.5CERT@VDECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo