Path traversal in Unizon Service - CVE-2026-9776
Published: June 26, 2026 / Updated: June 26, 2026
Vulnerability identifier: #VU135468
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-9776
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ATEN
Affected software:
Unizon Service
Unizon Service
Detailed vulnerability description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences within the writeFileToHttpServletResponse method in the "/rest/history/report/getFile" endpoint. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
How to mitigate CVE-2026-9776
Install updates from vendor's website.