Quest NetVault Backup 14.0.0.19 os command injection

Summaryinfo

A vulnerability marked as critical has been reported in Quest NetVault Backup 14.0.0.19. Affected is an unknown function. The manipulation leads to os command injection. This vulnerability is traded as CVE-2026-9787. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Quest NetVault Backup 14.0.0.19 and classified as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Quest NetVault Backup NVBULogDaemon Command 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 NVBULogDaemon JSON-RPC messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-27625.

It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2026-9787 since 05/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/25/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Backup Software

Vendor

• Quest

Name

• NetVault Backup

Version

• 14.0.0.19

License

• commercial

Website

• Vendor: https://www.quest.com/

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