SonicWall SonicOS 7.x < 7.3.4-7013 / 8.x < 8.2.3-8015 Multiple Vulnerabilities (SNWLID-2026-0014)

high Nessus Plugin ID 379720

Synopsis

The remote host is affected by multiple vulnerabilities.

Description

According to its self-reported version, the remote SonicWall firewall is running SonicOS 7.x prior to 7.3.4-7013, or 8.x prior to 8.2.3-8015. It is, therefore, affected by multiple vulnerabilities:

- A permissive cross-domain policy vulnerability has been identified in the SonicOS management interface, which in specific conditions could potentially enable a remote unauthenticated attacker to perform unauthorized operations.
(CVE-2026-107155)

- A session validation vulnerability has been identified in the SonicOS management interface, which in specific conditions could potentially enable a remote unauthenticated attacker to perform unauthorized operations.
(CVE-2026-107154)

- A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS SSL-VPN service, which could potentially enable a remote unauthenticated attacker to cause an application level denial of service.
(CVE-2026-82308)

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 SonicOS 7.3.4-7013, 8.2.3-8015 or later.

Plugin Details

Severity: High

ID: 379720

File Name: sonicwall_SNWLID-2026-0014.nasl

Version: 1.1

Type: Combined

Family: Firewalls

Published: 11/12/2026

Updated: 11/12/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.2

Percentile: 99.72

CVSS v2

Risk Factor: Critical

Base Score: 10

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

CVSS Score Source: CVE-2026-107155

CVSS v3

Risk Factor: High

Base Score: 8.8

Vector: CVSS:3.0/AV:N/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: 11/6/2026

Vulnerability Publication Date: 11/6/2026

CISA Known Exploited Vulnerability Due Dates: 11/20/2026

Reference Information

CVE: CVE-2026-107154, CVE-2026-107155, CVE-2026-19703, CVE-2026-19868, CVE-2026-77708, CVE-2026-77709, CVE-2026-82308

IAVA: 2026-A-1251

Detections

Analytics