CVE-2026-66148

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Authenticated Command Injection in SonicWall GMS CLI

Publication date: 2026-08-11

Last updated on: 2026-08-28

Assigner: SonicWALL, Inc.

Description

An authenticated command injection vulnerability was identified in GMS Command-Line Interface (CLI) 9.5.1 (Build 9510.1044) and earlier versions which allows low-privileged local user to execute system commands with root privileges.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-11

Last Modified

2026-08-28

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-66148

EUVD

EUVD-2026-56942

Affected Vendors & Products

Vendor	Product	Version / Range
sonicwall	gms_command-line_interface	to 9.5.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

This is an authenticated command injection vulnerability in the GMS Command-Line Interface (CLI) version 9.5.1 (Build 9510.1044) and earlier. A low-privileged local user can exploit it to execute system commands with root privileges.

Detection Guidance

This vulnerability requires authenticated access to the GMS CLI. Check for unauthorized command execution attempts or unusual system commands run with root privileges by low-privileged users. Review CLI logs for suspicious activity or unexpected command sequences.

Impact Analysis

An attacker with low privileges could gain root access, allowing them to take full control of the system, install malware, steal data, or disrupt operations. This could lead to severe security breaches and unauthorized system modifications.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR (data protection) and HIPAA (health information privacy) requirements. Organizations may face legal penalties, fines, and reputational damage due to non-compliance.

Mitigation Strategies

Update GMS Command-Line Interface to the latest version to patch the vulnerability. Restrict local user privileges to minimize potential exploitation. Monitor system logs for unusual command execution activities.

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