SonicWall SonicOS Improper Neutralization of HTTP Headers Vulnerability (SNWLID-2026-0009)

medium Nessus Plugin ID 379719

Synopsis

The remote host is affected by an improper neutralization of HTTP headers vulnerability.

Description

According to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected by an improper neutralization of HTTP headers for scripting syntax vulnerability:

- A improper neutralization of HTTP Headers for Scripting Syntax vulnerability in SonicOS could allow a remote attacker to manipulate the Host header and redirect firewall management users to arbitrary web domains.
(CVE-2026-0516)

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

Solution

See the vendor advisory for more information.

Plugin Details

Severity: Medium

ID: 379719

File Name: sonicwall_SNWLID-2026-0009.nasl

Version: 1.1

Type: Combined

Family: Firewalls

Published: 11/12/2026

Updated: 11/12/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.9

CVSS v2

Risk Factor: Medium

Base Score: 6.4

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

CVSS Score Source: CVE-2026-0516

CVSS v3

Risk Factor: Medium

Base Score: 6.5

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

Vulnerability Information

CPE: cpe:/o:sonicwall:sonicos

Required KB Items: installed_sw/SonicWall SonicOS

Patch Publication Date: 8/5/2026

Vulnerability Publication Date: 8/5/2026

Reference Information

CVE: CVE-2026-0516

IAVA: 2026-A-1251

Detections

Analytics