Quest NetVault Backup addclient3 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 addclient3 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-27666.
Metrics
Affected Vendors & Products
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History
Thu, 25 Jun 2026 13:30:00 +0000
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ssvc
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Thu, 25 Jun 2026 05:45:00 +0000
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Quest
Quest netvault Backup |
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Quest
Quest netvault Backup |
Wed, 24 Jun 2026 23:45:00 +0000
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| Description | Quest NetVault Backup addclient3 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 addclient3 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-27666. | |
| Title | Quest NetVault Backup addclient3 Cross-Site Scripting Authentication Bypass Vulnerability | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_0
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Status: PUBLISHED
Assigner: zdi
Published: 2026-06-24T23:13:55.522Z
Updated: 2026-06-25T12:48:17.796Z
Reserved: 2026-05-27T22:27:43.798Z
Link: CVE-2026-9780
Updated: 2026-06-25T12:47:17.248Z
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