Vulnerability Details CVE-2026-7569
Quest NetVault Backup viewclient Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Quest NetVault Backup. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the viewclient webpage. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-28202.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 47.3%
CVSS Severity
CVSS v3 Score 8.8
References
Products affected by CVE-2026-7569
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cpe:2.3:a:quest:netvault_backup:10.0.5
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cpe:2.3:a:quest:netvault_backup:11.2.0.13
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cpe:2.3:a:quest:netvault_backup:11.3
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cpe:2.3:a:quest:netvault_backup:11.3.0.12
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cpe:2.3:a:quest:netvault_backup:11.4
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cpe:2.3:a:quest:netvault_backup:11.4.5
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cpe:2.3:a:quest:netvault_backup:12.0
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cpe:2.3:a:quest:netvault_backup:12.0.1
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cpe:2.3:a:quest:netvault_backup:12.1
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cpe:2.3:a:quest:netvault_backup:12.2
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cpe:2.3:a:quest:netvault_backup:12.3