SonicWall SonicOS Multiple Vulnerabilities (SNWLID-2026-0004)

high Nessus Plugin ID 311435

Synopsis

The remote host is affected by multiple vulnerabilities.

Description

According to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected by multiple vulnerabilities:

- An improper access control vulnerability in the SonicOS management interface allows certain management interface functions to be accessible under specific conditions. (CVE-2026-0204)

- A post-authentication path traversal vulnerability in SonicOS allows an attacker to interact with usually restricted services. (CVE-2026-0205)

- A post-authentication stack-based buffer overflow vulnerability in SonicOS allows a remote attacker to crash a firewall. (CVE-2026-0206)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in the vendor security advisory.

Plugin Details

Severity: High

ID: 311435

File Name: sonicwall_SNWLID-2026-0004.nasl

Version: 1.1

Type: Combined

Family: Firewalls

Published: 5/1/2026

Updated: 5/1/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 8.3

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-0204

CVSS v3

Risk Factor: High

Base Score: 8

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/o:sonicwall:sonicos

Required KB Items: installed_sw/SonicWall SonicOS

Patch Publication Date: 4/29/2026

Vulnerability Publication Date: 4/29/2026

Reference Information

CVE: CVE-2026-0204, CVE-2026-0205, CVE-2026-0206

IAVA: 2026-A-0411

Detections

Analytics