CVE-2026-9781
Received Received - Intake
Quest NetVault Backup SQL Injection Remote Code Execution

Publication date: 2026-06-25

Last updated on: 2026-06-25

Assigner: Zero Day Initiative

Description
Quest NetVault Backup NVBURASDevice 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 NVBURASDevice 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-27648.
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Meta Information
Published
2026-06-25
Last Modified
2026-06-25
Generated
2026-06-25
AI Q&A
2026-06-25
EPSS Evaluated
N/A
NVD
CVE-2026-9781
EUVD
EUVD-2026-39141
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
quest netvault_backup to 2026-06-24 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
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Compliance Impact

The provided information does not specify how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

Impact Analysis

This vulnerability can have severe impacts as it allows remote attackers to execute arbitrary code on affected installations of Quest NetVault Backup.

Attackers could gain control over the system with the privileges of the NETWORK SERVICE account, potentially leading to data breaches, system compromise, or disruption of backup services.

Since the authentication mechanism can be bypassed, unauthorized users might exploit this vulnerability without proper credentials.

Mitigation Strategies

To mitigate this vulnerability, you should apply the update released by Quest that addresses this issue.

Executive Summary

CVE-2026-9781 is a critical vulnerability in Quest NetVault Backup that allows remote attackers to execute arbitrary code on affected systems.

The flaw exists due to improper validation of user-supplied strings in NVBURASDevice JSON-RPC messages, which enables SQL injection attacks.

Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

Successful exploitation could allow attackers to run code in the context of the NETWORK SERVICE account.

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