CVE-2026-0516: CWE-644 Improper neutralization of HTTP headers for scripting syntax in SonicWall SonicOS
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.
AI Analysis
Technical Summary
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.
CVE-2026-0516: CWE-644 Improper neutralization of HTTP headers for scripting syntax in SonicWall 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
Affected software
SonicWall
SonicOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
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.
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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