Command Injection Vulnerability in Quest NetVault Backup
CVE-2026-9787

8.8HIGH

Key Information:

Vendor

Quest

Status
Netvault Backup
Vendor
CVE Published:
24 June 2026

What is CVE-2026-9787?

A command injection vulnerability exists in Quest NetVault Backup’s NVBULogDaemon, allowing attackers to execute arbitrary code remotely. The flaw stems from improper validation of user-supplied strings within JSON-RPC messages, enabling attackers to bypass authentication and run commands in the context of the SYSTEM user. This vulnerability poses a significant risk as it allows unauthorized access and potential manipulation of the system.

Affected Version(s)

NetVault Backup 14.0.0.19

References

https://www.zerodayinitiative.com/advisories/ZDI-26-376/
x_research-advisory
https://support.quest.com/technical-documents/netvault/14...
vendor-advisory

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.0

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.