CVE-2026-81572

In CodeMeter Runtime from version 8.40 to (excluding) 8.41a and 9.00 to (excluding) 9.10, cmu.exe --create-io --file C: creates a predictable temporary file under C:\CM-Stick. The directory and file paths are not properly checked for NTFS reparse points, such as junctions or symbolic links, before file operations are performed. A local attacker can create a junction at the temporary file that points to an arbitrary system path. Because CodeMeter Runtime runs with System privileges, this could allow arbitrary files to be deleted with System privileges and potentially enable local privilege escalation.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103081.pdf
https://shelltrail.com/research/local-privilege-escalation-to-system-in-wibu-systems-codemeter-application

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-27 10:16

Updated : 2026-09-01 20:56

NVD link : CVE-2026-81572

Mitre link : CVE-2026-81572

CVE.ORG link : CVE-2026-81572

JSON object : View

Products Affected

No product.

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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