CVE-2026-0516
Received Received - Intake

Host Header Injection in SonicOS

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: SonicWALL, Inc.

Description
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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-0516
EUVD
EUVD-2026-53334

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
sonicwall sonicos *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-644 The product does not neutralize or incorrectly neutralizes web scripting syntax in HTTP headers that can be used by web browser components that can process raw headers, such as Flash.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability involves improper neutralization of HTTP headers in SonicOS, allowing a remote attacker to manipulate the Host header. This could redirect firewall management users to arbitrary web domains, potentially leading to phishing or unauthorized access.

Impact Analysis

If exploited, this vulnerability could trick users into visiting malicious domains, compromising sensitive firewall management sessions. Attackers might steal credentials or deliver malware through redirected interfaces.

Compliance Impact

This vulnerability could potentially impact compliance with standards like GDPR and HIPAA by enabling attackers to manipulate HTTP headers and redirect users to malicious domains, which may lead to unauthorized access or data exposure. However, specific compliance impacts are not detailed in the provided CVE information.

Mitigation Strategies

Implement network monitoring for unusual Host header modifications in HTTP requests. Restrict access to SonicOS management interfaces to trusted IP addresses only. Update SonicOS to the latest patched version if available.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-0516. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart