ZDI-26-377: Quest NetVault Backup viewclient Cross-Site Scripting Authentication Bypass Vulnerability

Published Jun 24, 2026
·
Updated

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 ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-7569.

Affected Software

1 affected component
Quest Software NetVault Backup

Event History

Jun 24, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Advisory Published
via ZDI·11:45 PM
Data Sourced
via ZDI·11:45 PM
Affected Software

Frequently Asked Questions

1

What is the severity of ZDI-26-377?

The severity of ZDI-26-377 is rated at 8.8 according to the CVSS scoring system.

2

How can I fix ZDI-26-377?

To fix ZDI-26-377, apply the latest security patches provided by Quest Software for NetVault Backup.

3

What type of vulnerability is ZDI-26-377?

ZDI-26-377 is a Cross-Site Scripting (XSS) authentication bypass vulnerability.

4

Are user interactions required to exploit ZDI-26-377?

Yes, user interaction is required as the target must visit a malicious page or open a malicious file to exploit ZDI-26-377.

5

What software is affected by ZDI-26-377?

ZDI-26-377 affects installations of Quest Software NetVault Backup.

Contact

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