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CVE-2026-0516: CWE-644 Improper neutralization of HTTP headers for scripting syntax in SonicWall SonicOS

0
Medium
Published: 08/05/2026 (08/05/2026, 11:50:03 UTC)
Source: CVE Database V5
Vendor/Project: SonicWall
Product: SonicOS

Description

CVE-2026-0516 is a medium severity vulnerability in SonicWall SonicOS involving improper neutralization of HTTP headers. This flaw allows a remote attacker to manipulate the Host header, potentially redirecting firewall management users to arbitrary web domains. No specific affected versions or patches have been disclosed yet.

CVSS v3.1

Score 6.5medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected software

SonicWall

SonicOS

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/12/2026, 15:08:16 UTC

Technical Analysis

This vulnerability in SonicWall SonicOS is classified as CWE-644, indicating improper neutralization of HTTP headers for scripting syntax. It enables remote attackers to manipulate the Host header in HTTP requests, which could lead to redirecting users of the firewall management interface to attacker-controlled web domains. The CVSS 3.1 base score is 6.5, reflecting a network attack vector with low complexity and no privileges or user interaction required. The impact includes limited confidentiality and integrity loss but no availability impact. No official remediation or patch information is currently available, and no known exploits are reported in the wild.

Potential Impact

An attacker can remotely manipulate HTTP Host headers to redirect firewall management users to arbitrary domains, potentially facilitating phishing or other social engineering attacks. The confidentiality and integrity impacts are limited, and there is no impact on availability. No active exploitation has been reported.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution when accessing the firewall management interface and monitor for updates from SonicWall.

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Technical Details

Data Version
5.2
Assigner Short Name
sonicwall
Date Reserved
2025-12-12T10:06:41.342Z
State
PUBLISHED

Threat ID: 6a7331b4bf8831d539e4e939

Added to database: 08/05/2026, 12:51:00 UTC

Last enriched: 08/12/2026, 15:08:16 UTC

Last updated: 09/18/2026, 01:21:48 UTC

Views: 77

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