CVE-2026-9774

ATEN Unizon updateLicense Directory Traversal Arbitrary File Deletion Vulnerability. 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. Was ZDI-CAN-28502.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

EPSS

1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-25)

CWE

CWE-22

Published

2026-06-24

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• aten:unizon

References

• https://www.aten.com/global/en/supportcenter/info/security-advisory/27/
• https://www.zerodayinitiative.com/advisories/ZDI-26-378/

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