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Vulnerability Details CVE-2026-9776

ATEN Unizon writeFileToHttpServletResponse Directory Traversal Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of ATEN Unizon. Authentication is not required to exploit this vulnerability. The specific flaw exists within the writeFileToHttpServletResponse 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 disclose information in the context of SYSTEM. Was ZDI-CAN-28505.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.016
EPSS Ranking 72.5%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-9776
  • Aten » Unizon » Version: 2.4.233
    cpe:2.3:a:aten:unizon:2.4.233
  • Aten » Unizon » Version: 2.5.242
    cpe:2.3:a:aten:unizon:2.5.242
  • Aten » Unizon » Version: 2.5.243
    cpe:2.3:a:aten:unizon:2.5.243
  • Aten » Unizon » Version: 2.6.253
    cpe:2.3:a:aten:unizon:2.6.253
  • Aten » Unizon » Version: 2.7.262
    cpe:2.3:a:aten:unizon:2.7.262
  • Aten » Unizon » Version: 2.7.263
    cpe:2.3:a:aten:unizon:2.7.263


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