Unauthenticated redirection via manipulated Host header
Published Aug 5, 2026 · Updated Aug 5, 2026
Improper HTTP-header neutralization in SonicWall SonicOS allows remote attackers to redirect firewall management users to arbitrary web domains. The management interface processes an attacker-controlled Host header as a redirect destination without properly neutralizing scripting syntax. No authentication is required to submit the request, but reported impact is limited to steering management users to an attacker-chosen domain.
Summary
What happened
Improper HTTP-header neutralization in SonicWall SonicOS allows remote attackers to redirect firewall management users to arbitrary web domains. The management interface processes an attacker-controlled Host header as a redirect destination without properly neutralizing scripting syntax. No authentication is required to submit the request, but reported impact is limited to steering management users to an attacker-chosen domain.
The record
- CVE
- CVE-2026-0516
- Published
- Aug 5, 2026
- Updated
- Aug 5, 2026
- Vendor
- SonicWall
- Product
- SonicOS
- Classifications
- CWE-644, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 5, 2026CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.5.5.2-28n and older versions
- Affected versionversion=7.0.1-5169 and older versions
- Affected versionversion=7.3.3-7015 and older versions
- Affected versionversion=8.2.1-8010 and older versions
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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