ATEN Unizon updateLicense Directory Traversal Arbitrary File Deletion Vulnerability
June 24th, 2026
Vulnerability Details
This vulnerability allows remote attackers to delete arbitrary files on affected installations of ATEN Unizon. Authentication is required to exploit this vulnerability.
The specific flaw exists within the updateLicense method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to delete files or create a denial-of-service condition on the system.
Additional Details
ATEN has issued an update to correct this vulnerability. More details can be found at:
https://www.aten.com/global/en/supportcenter/info/security-advisory/27/
Disclosure Timeline
- 2026-03-13 - Vulnerability reported to vendor
- 2026-06-24 - Coordinated public release of advisory
- 2026-06-24 - Advisory Updated
Credit
Ahmed Y. Elmogy
