CVE-2026-66150

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Improper Code Injection in SonicWall Email Security

Publication date: 2026-08-11

Last updated on: 2026-08-28

Assigner: SonicWALL, Inc.

Description

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 SNMP.

CVSS Scores

EPSS Scores

Probability:
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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-2026-66150

EUVD

EUVD-2026-56947

Affected Vendors & Products

Vendor	Product	Version / Range
sonicwall	email_security	*

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 a code injection vulnerability in SonicWall Email Security appliances. An authenticated attacker with CLI access can inject malicious OS commands via SNMP that execute with root privileges.

Detection Guidance

Detecting this vulnerability requires checking for unauthorized SNMP access or suspicious command execution on SonicWall Email Security appliances. Monitor CLI logs for unexpected SNMP-related commands and verify SNMP configurations are restricted to authorized users only.

Impact Analysis

An attacker could gain full control of the appliance, steal sensitive data, disrupt email services, or use it as a pivot point to attack other systems on the network.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR's data protection requirements and HIPAA's security rules for protected health information.

Mitigation Strategies

Immediately restrict access to the SonicWall Email Security restricted CLI and disable SNMP if not required. Apply the latest security patches from SonicWall and monitor for unauthorized command execution attempts.

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