EUVD-2026-39145
GHSA-qrh4-m2m7-cgg3
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable JSON-RPC with low-complexity SQLi; PR:L kept per ZDI despite the noted auth bypass, and code execution as NETWORK SERVICE yields high C/I/A.
Primary rating from Vendor (trendmicro).
CVSS VectorVendor: trendmicro
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
SQL injection in Quest NetVault Backup's NVBULibraryPort JSON-RPC handler allows remote attackers to execute arbitrary code as NETWORK SERVICE on affected installations. While exploitation nominally requires authentication (CVSS PR:L), the ZDI advisory states the existing authentication mechanism can be bypassed, effectively lowering the barrier to remote attackers. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network access to the NetVault Backup NVBULibraryPort JSON-RPC service and the ability to submit a crafted JSON-RPC message with an attacker-controlled string that is concatenated into a SQL query. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.0 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, score 8.8 High) indicates a low-complexity, network-reachable attack with full confidentiality, integrity, and availability impact requiring only low privileges. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network reach to the NetVault Backup service crafts a malicious NVBULibraryPort JSON-RPC message containing a SQL injection payload in a user-controlled string field, and leverages the described authentication bypass to deliver it without valid credentials. The injected SQL executes in a context that permits command execution, yielding arbitrary code execution as NETWORK SERVICE. … |
| Remediation | Upgrade Quest NetVault Backup to version 14.0.2 or later, which addresses this issue per the vendor release notes (https://support.quest.com/technical-documents/netvault/14.0.2/release-notes#TOPIC-2338529); see also ZDI advisory ZDI-26-373 (https://www.zerodayinitiative.com/advisories/ZDI-26-373/). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Identify and inventory all Quest NetVault Backup installations; assess network exposure and restrict administrative access to NVBULibraryPort services to authorized hosts only. …
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External POC / Exploit Code
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