Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability

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Summary

CVECVE-2026-9787
StatePUBLISHED
Assignerzdi
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 00:17:48 UTC
Updated2026-06-25 14:23:56 UTC
DescriptionQuest 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.

Risk And Classification

Primary CVSS: v3.0 8.8 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-78 | CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

VersionSourceTypeScoreSeverityVector
3.0[email protected]Secondary8.8HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.0CNACVSS8.8HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Quest NetVault Backup affected 14.0.0.19 Not specified

References

ReferenceSourceLinkTags
www.zerodayinitiative.com/advisories/ZDI-26-376 [email protected] www.zerodayinitiative.com
support.quest.com/technical-documents/netvault/14.0.2/release-notes [email protected] support.quest.com
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