ZDI-CAN-28202: 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 viewclient

Event History

Jun 24, 2026

Advisory Published

via ZDI·05:00 AM

Data Sourced

via ZDI·05:00 AM

Description

Frequently Asked Questions

What is the severity of ZDI-CAN-28202?

ZDI-CAN-28202 has a CVSS rating of 8.8, indicating a high severity vulnerability.

How do I fix ZDI-CAN-28202?

To fix ZDI-CAN-28202, ensure that you update your Quest NetVault Backup software to the latest version as provided by the vendor.

What type of vulnerability is ZDI-CAN-28202?

ZDI-CAN-28202 is a Cross-Site Scripting Authentication Bypass vulnerability.

What are the potential impacts of ZDI-CAN-28202?

The potential impact of ZDI-CAN-28202 is that remote attackers could bypass authentication, gaining unauthorized access to the affected system.

Does ZDI-CAN-28202 require user interaction to exploit?

Yes, ZDI-CAN-28202 requires user interaction as the target user must visit a malicious page or open a malicious file to exploit the vulnerability.