CVE-2026-9774 ATEN Unizon updateLicense Directory Traversal Arbitrary File Deletion Vulnerability

Medium 5.5 Published 24 Jun 2026 Updated 25 Jun 2026

Remote authenticated attackers can delete arbitrary files via path traversal in the updateLicense method, causing denial of service.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-9774?

CVE-2026-9774 is a medium-severity path traversal vulnerability in ATEN Unizon, published on 24 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

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.

Weakness: CWE-22

Which versions are affected by CVE-2026-9774?

It affects 1 product.

Products include Aten Unizon.

How do I fix CVE-2026-9774?

No fix has been published for CVE-2026-9774 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-9774 being exploited?

There is no known exploitation of CVE-2026-9774 in the wild and no public exploit code.

Sources

Also known as GHSA-mj86-56mg-7pmq.