SonicWall SonicOS SSLVPN Stack-Based Buffer Overflow DoS (SNWLID-2025-0016)

high Nessus Plugin ID 277588

Synopsis

The remote host is affected by a stack-based buffer overflow vulnerability.

Description

According to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected by a stack-based buffer overflow vulnerability in the SSLVPN service that could allow a remote, unauthenticated attacker to crash the firewall and initiate a Denial of Service attack.

Note that Nessus has not tested for this issue 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: 277588

File Name: sonicwall_SNWLID-2025-0016.nasl

Version: 1.1

Type: combined

Family: Firewalls

Published: 12/5/2025

Updated: 12/5/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: High

Base Score: 7.8

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

CVSS Score Source: CVE-2025-40601

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:/o:sonicwall:sonicos

Required KB Items: installed_sw/SonicWall SonicOS

Patch Publication Date: 11/19/2025

Vulnerability Publication Date: 11/19/2025

Reference Information

CVE: CVE-2025-40601

IAVA: 2025-A-0875

Detections

Analytics