SonicWall GMS up to 9.5.1/9510.1044 Command-Line Interface command injection

Summaryinfo

A vulnerability marked as very critical has been reported in SonicWall GMS up to 9.5.1/9510.1044. Affected by this issue is some unknown functionality of the component Command-Line Interface. This manipulation causes command injection. The identification of this vulnerability is CVE-2026-66148. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in SonicWall GMS up to 9.5.1/9510.1044. It has been declared as very critical. Affected by this vulnerability is an unknown code of the component Command-Line Interface. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at psirt.global.sonicwall.com. This vulnerability is known as CVE-2026-66148 since 07/24/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/11/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• SonicWall

Name

• GMS

Version

• 9.5.0
• 9.5.1
• 9510.1044

License

• commercial

Website

• Vendor: https://www.sonicwall.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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