SonicWall Email Security Restricted CLI netmask os command injection

Summaryinfo

A vulnerability was found in SonicWall Email Security. It has been rated as critical. This affects an unknown function of the component Restricted CLI. Performing a manipulation of the argument netmask results in os command injection. This vulnerability is known as CVE-2026-66149. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in SonicWall Email Security (version unknown). This affects an unknown function of the component Restricted CLI. The manipulation of the argument netmask with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Improper Control of Generation of Code ('Code Injection') Vulnerability in the SonicWall Email Security appliance allows an authenticated attacker with access to the SonicWall Email Security restricted CLI can inject arbitrary OS commands that execute as root via netmask.

The advisory is shared at psirt.global.sonicwall.com. This vulnerability is uniquely identified as CVE-2026-66149 since 07/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but no exploit is 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.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Anti-Malware Software

Vendor

• SonicWall

Name

• Email Security

License

• commercial

Website

• Vendor: https://www.sonicwall.com/

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