CVE-2026-9784

High

Description

Quest NetVault Backup NVBULibraryPort SQL Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest NetVault Backup. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the processing of NVBULibraryPort JSON-RPC messages. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to execute code in the context of NETWORK SERVICE. Was ZDI-CAN-27631.

SeverityHigh

CVSS8.8

Exploit probability—

ProductQuest Netvault Backup

PublishedJun 25, 2026

First seenJun 25, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

quest netvault_backup14.0.2 or later

Vendor advisories

support.quest.com/technical-documents/netvault/14.0.2/release-notes#TOPIC-2338529

Affected products

Product	Affected versions	Fixed in
quest netvault_backup	v < 14.0.2	14.0.2

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