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CVE-2026-0205

Post-Authentication Path Traversal in SonicOS Enabling Restricted Service Access

A post-authentication Path Traversal vulnerability in SonicOS allows an attacker to interact with usually restricted services.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
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Nsa 2650 Nsa 2700 Nsa 2800 and 61 more
CVE-2021-20046

A Stack-based buffer overflow in the SonicOS HTTP Content-Length response header allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall. This vulnerability affected SonicOS Gen 5, Gen 6 and Gen 7 firmware versions.

CVSS 3.1 · 8.8 High EPSS 2.0% KEV · Not listed
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Nsa 2650 Nsa 2700 Nsa 3650 and 56 more
CVE-2021-20048

A Stack-based buffer overflow in the SonicOS SessionID HTTP response header allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall. This vulnerability affected SonicOS Gen 5, Gen 6 and Gen 7 firmware versions.

CVSS 3.1 · 8.8 High EPSS 2.0% KEV · Not listed
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Nsa 2650 Nsa 2700 Nsa 3650 and 56 more
CVE-2022-22274

A Stack-based buffer overflow vulnerability in the SonicOS via HTTP request allows a remote unauthenticated attacker to cause Denial of Service (DoS) or potentially results in code execution in the firewall.

CVSS 3.1 · 9.8 Critical EPSS 75.5% KEV · Not listed
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Nsa 2700 Nsa 3700 Nsa 4700 and 30 more
CVE-2022-22275

Improper Restriction of TCP Communication Channel in HTTP/S inbound traffic from WAN to DMZ bypassing security policy until TCP handshake potentially resulting in Denial of Service (DoS) attack if a target host is vulnerable.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
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Nsa 2650 Nsa 2700 Nsa 3650 and 50 more
CVE-2024-40766

An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially leading to unauthorized resource access and in specific conditions, causing the firewall to crash. This issue affects SonicWall Firewall Gen 5 and Gen 6 devices, as well as Gen 7 devices running SonicOS 7.0.1-5035 and older versions.

CVSS 3.1 · 9.3 Critical EPSS 18.4% KEV · Listed
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Nsa 2650 Nsa 2700 Nsa 3600 and 49 more