What’s Vulnerable › Vulnerabilities

CVE-2022-27642

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-29 · updated 2026-06-17
• Weakness: CWE-863

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-15854.

Affected products

• NETGEAR Cax80 Firmware: before 2.1.3.7 — fixed in 2.1.3.7
• NETGEAR Lax20 Firmware: before 1.1.6.34 — fixed in 1.1.6.34
• NETGEAR Mr60 Firmware: before 1.1.6.124 — fixed in 1.1.6.124
• NETGEAR Mr80 Firmware: before 1.1.6.14 — fixed in 1.1.6.14
• NETGEAR Ms60 Firmware: before 1.1.6.124 — fixed in 1.1.6.124
• NETGEAR Ms80 Firmware: before 1.1.6.14 — fixed in 1.1.6.14
• NETGEAR R6400 Firmware: before 1.0.1.78; before 1.0.4.126 — fixed in 1.0.1.78, 1.0.4.126
• NETGEAR R6700: before 1.0.4.126 — fixed in 1.0.4.126
• NETGEAR R6900P Firmware: before 1.3.3.148 — fixed in 1.3.3.148
• NETGEAR R7000: before 1.0.11.134 — fixed in 1.0.11.134
• NETGEAR R7000P: before 1.3.3.148 — fixed in 1.3.3.148
• NETGEAR R7100Lg Firmware: before 1.0.0.76 — fixed in 1.0.0.76
• NETGEAR R7850 Firmware: before 1.0.5.84 — fixed in 1.0.5.84
• NETGEAR R7900P Firmware: before 1.4.3.88 — fixed in 1.4.3.88
• NETGEAR R7960P Firmware: before 1.4.3.88 — fixed in 1.4.3.88
• NETGEAR R8000 Firmware: before 1.0.4.84 — fixed in 1.0.4.84
• NETGEAR R8000P Firmware: before 1.4.3.88 — fixed in 1.4.3.88
• NETGEAR R8500 Firmware: before 1.0.2.158 — fixed in 1.0.2.158
• NETGEAR Rax15 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax200 Firmware: before 1.0.6.138 — fixed in 1.0.6.138
• NETGEAR Rax20 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax35 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax38 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax40 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax42 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• Netgear RAX43: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax45 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax48 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax50 Firmware: before 1.0.10.110 — fixed in 1.0.10.110
• NETGEAR Rax50S Firmware: before 1.0.10.110 — fixed in 1.0.10.110

How to fix

Upgrade to a fixed version: NETGEAR Cax80 Firmware 2.1.3.7; NETGEAR Lax20 Firmware 1.1.6.34; NETGEAR Mr60 Firmware 1.1.6.124; NETGEAR Mr80 Firmware 1.1.6.14; NETGEAR Ms60 Firmware 1.1.6.124; NETGEAR Ms80 Firmware 1.1.6.14; NETGEAR R6400 Firmware 1.0.1.78, 1.0.4.126; NETGEAR R6700 1.0.4.126; NETGEAR R6900P Firmware 1.3.3.148; NETGEAR R7000 1.0.11.134; NETGEAR R7000P 1.3.3.148; NETGEAR R7100Lg Firmware 1.0.0.76. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000064723/Security-Advisory-for-Multiple-Vulnerabilities-on-Multiple-Products-PSV-2021-0327
• https://www.zerodayinitiative.com/advisories/ZDI-22-518/
• https://kb.netgear.com/000064723/Security-Advisory-for-Multiple-Vulnerabilities-on-Multiple-Products-PSV-2021-0327
• https://www.zerodayinitiative.com/advisories/ZDI-22-518/

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