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Vulnerability record · CVE-2022-27642 · published 29 March 2023

CVE-2022-27642: Netgear cax80 firmware incorrect authorization vulnerability

Netgear · Cax80 Firmware

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.

8.8 CVSS 3.1 High EPSS 0.88% · top 42.3% CWE-863 · Incorrect authorization
8.8CVSS 3.1 base score
0.88%EPSS exploitation probability, 30 days
NoNot in CISA KEV
33Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

33 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://kb.netgear.com/000064723/Security-Advisory-for-Multiple-Vulnerabilities-on-Multiple-Products-PSV-2021-0327 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-518/ Third Party AdvisoryVDB Entry
https://kb.netgear.com/000064723/Security-Advisory-for-Multiple-Vulnerabilities-on-Multiple-Products-PSV-2021-0327 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-518/ Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-36187Netgear cbr40 firmware classic buffer overflow vulnerabilityBuffer Overflow vulnerability in NETGEAR R6400v2 before version 1.0.4.118, allows remote unauthenticated attackers to execute arbitrary code via craf…EPSS 1.1%9.8CVE-2022-48322Netgear mr60 firmware out-of-bounds write vulnerabilityNETGEAR Nighthawk WiFi Mesh systems and routers are affected by a stack-based buffer overflow vulnerability. This affects MR60 before 1.1.7.132, MS60…EPSS 0.68%9.8CVE-2021-45617Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, EAX20 before 1.0.0.48, …EPSS 2.1%9.8CVE-2021-45616Netgear cbr750 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 3.2.18.2, LAX20 before 1.1.6.28,…EPSS 2.0%9.8CVE-2021-45613Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.0%9.8CVE-2021-45622Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.4%9.8CVE-2021-45620Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.0%9.8CVE-2021-45614Netgear d7000v2 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D7000v2 before 1.0.0.74, LAX20 before 1.1.6.28…EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2022-27642), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.