CVE-2026-9783
Received Received - Intake
SQL Injection in Quest NetVault Backup

Publication date: 2026-06-25

Last updated on: 2026-06-25

Assigner: Zero Day Initiative

Description
Quest NetVault Backup NVBURemovableMedia 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 NVBURemovableMedia 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-27632.
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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-2026-9783
EUVD
EUVD-2026-39144
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
quest netvault_backup to 2026-06-24 (exc)
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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Executive Summary

CVE-2026-9783 is a vulnerability in Quest NetVault Backup that allows remote attackers to execute arbitrary code. The flaw is due to improper validation of user-supplied strings used in SQL queries within the NVBURemovableMedia JSON-RPC message processing. Although authentication is required to exploit this vulnerability, the authentication mechanism can be bypassed, enabling attackers to run code with NETWORK SERVICE privileges.

Impact Analysis

This vulnerability can have a severe impact as it allows remote attackers to execute arbitrary code on affected systems. Successful exploitation could lead to full compromise of the Quest NetVault Backup installation, potentially allowing attackers to manipulate backup data, disrupt backup operations, or use the compromised system as a foothold for further attacks within the network.

Mitigation Strategies

To mitigate this vulnerability, you should apply the update released by Quest for NetVault Backup that addresses the issue with NVBURemovableMedia JSON-RPC message processing.

Since the vulnerability allows remote code execution by bypassing authentication, it is critical to update the affected software as soon as possible to prevent exploitation.

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