# CVE-2026-9783: Quest NetVault Backup SQL injection in NVBURemovableMedia

Source: https://junglewise.ai/threats/cve-2026-9783-quest-netvault-backup-sql-injection-in-nvburemovablemedia  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-25. Updated: 2026-06-25  
License: CC BY 4.0 with a link back

CVE-2026-9783 · Severity: high · CVSS 8.8 · Published 2026-06-25

Quest NetVault Backup is a data protection solution used to back up and restore enterprise data across physical and virtual environments. A security flaw in its removable media management component allows a remote attacker to bypass authentication and execute unauthorized commands on the server. This could lead to a total compromise of the backup system, potentially resulting in the loss, theft, or encryption of critical business data.

Technologies: [Quest NetVault Backup](https://junglewise.ai/threats/technologies/netvault-backup). Vendors: [Quest](https://junglewise.ai/threats/vendors/quest).

## Quick answers

**Is CVE-2026-9783 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9783 being exploited in the wild.

**How severe is CVE-2026-9783?** High severity, with a CVSS score of 8.8, published 25 June 2026.

**Which products and versions are affected?** Quest NetVault Backup 14.0.0.19 and earlier.

**Is there a fix for CVE-2026-9783?** A patch was published on 2026-06-24: Quest released version 14.0.2 to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-9783 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-9783?** Check whether you run Quest NetVault Backup at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A SQL injection vulnerability exists within the NVBURemovableMedia component of Quest NetVault Backup due to insufficient validation of user-supplied strings in JSON-RPC messages. While the vulnerable function technically requires authentication, the existing authentication mechanism can be bypassed, making the flaw reachable by unauthenticated remote attackers. By injecting malicious SQL commands, an attacker can achieve remote code execution in the security context of the NETWORK SERVICE account. The vulnerability was addressed in Quest NetVault Backup version 14.0.2.

## Affected products

- Quest NetVault Backup 14.0.0.19 and earlier

## Timeline

- 2025-09-24: disclosed: Vulnerability reported to vendor via ZDI
- 2026-06-24: advisory: ZDI advisory published
- 2026-06-24: patched: Quest released version 14.0.2 to address the issue
- 2026-06-25: other: CVE published to NVD

## References

- [https://support.quest.com/technical-documents/netvault/14.0.2/release-notes](https://support.quest.com/technical-documents/netvault/14.0.2/release-notes)
- [https://www.zerodayinitiative.com/advisories/ZDI-26-372/](https://www.zerodayinitiative.com/advisories/ZDI-26-372/)

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