Vulnerability · Published Jun 24, 2026 · Assigned by zdi

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

Medium 5.5

In plain English

A medium-severity path traversal in Unizon from ATEN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).

Severity (CVSS 3.0)5.5Medium

Exploit odds (30 days)1.5%top 25.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
ATEN	Unizon	2.7.262.002

Weakness: CWE-22 · Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

References

ZDI-26-378 x_research-advisory
vendor-provided URL vendor-advisory