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6.5

ATEN Unizon: Unauthorized File Deletion via Malicious Upload

CVE-2026-9775 · published 4 months ago
Summary

A vulnerability in ATEN Unizon allows attackers to delete files on affected systems after logging in. This could lead to data loss or system downtime. ATEN Unizon users should update to the latest version to fix this issue.

What to do
  • Update aten unizon to version 2.7.264 or later.
Affected software
VendorProductAffected versions
aten unizon < 2.7.264
cpe:2.3:a:aten:unizon:*:*:*:*:*:*:*:*
Original advisory text
ATEN Unizon uploadSSL Directory Traversal Arbitrary File Deletion Vulnerability. This vulnerability allows remote attackers to delete arbitrary files on affected installations of ATEN Unizon. Authe...
ATEN Unizon uploadSSL 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 uploadSSL 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-28503.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
6.5 Medium
Exploitation
2% chance of attack within 30 days
Type
CWE-22Path Traversal
Timeline
Published24 Jun 2026
Updated31 Oct 2026
First seen24 Jun 2026
Sources
CVE-2026-9775 · NVD
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