SB2026090351 - Multiple vulnerabilities in SonicWall Network Security Manager (NSM)
Published: September 3, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) OS Command Injection (CVE-ID: CVE-2026-78327)
CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to command injection in the management interface when handling management requests. A remote privileged user can inject arbitrary commands to execute arbitrary code.
The injected commands are executed on the underlying host.
2) Missing Authorization (CVE-ID: CVE-2026-78328)
CWE-ID: CWE-862 - Missing Authorization
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to missing authorization in the management interface when handling management requests. A remote privileged user can access functionality intended for SuperAdmin users to escalate privileges.
The issue allows a lower-privileged Admin user to gain SuperAdmin privileges.
3) Path traversal (CVE-ID: CVE-2026-81939)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to write files outside the intended directory.
The vulnerability exists due to path traversal in file upload and archive processing functionality when processing a specially crafted archive. A remote privileged user can upload a specially crafted archive to write files outside the intended directory.
Remediation
Install update from vendor's website.