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CVE-2020-27866

Quick assessment

Affected
NETGEAR Multiple Routers
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netgear NETGEAR WNR2020等都是美国网件（Netgear）公司的产品。NETGEAR WNR2020是一款无线路由器。NETGEAR R6220是一款无线路由器。NETGEAR R6700v2是一款无线路由器。 多款 NETGEAR 路由器中存在授权问题漏洞，该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。以下产品和版本受到影响：NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R745

AI Predicted 8.6 Difficulty: Easy EPSS 8.66% · P95

Public Exploits 1

Nuclei · 1 CVE-2020-27866.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-27866

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. 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-11355.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
多款Netgear产品授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netgear NETGEAR WNR2020等都是美国网件（Netgear）公司的产品。NETGEAR WNR2020是一款无线路由器。NETGEAR R6220是一款无线路由器。NETGEAR R6700v2是一款无线路由器。 多款 NETGEAR 路由器中存在授权问题漏洞，该漏洞源于网络系统或产品中缺少身份验证措施或身份验证强度不足。以下产品和版本受到影响：NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R745
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
NETGEAR Multiple Routers firmware version 1.2.0.62_1.0.1 -

II. Public POCs for CVE-2020-27866

# POC Description Source Link Shenlong Link
1 NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers are vulnerable to authentication bypass vulnerabilities which could allow network-adjacent attackers to bypass authentication on affected installations. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-27866.yaml POC Details
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III. Intelligence Information for CVE-2020-27866

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Vendor Advisories for CVE-2020-27866 (1)

Other References for CVE-2020-27866 (1)

Same Patch Batch · NETGEAR · 2021-02-11 · 3 CVEs total

CVE-2020-27861 Netgear NETGEAR 操作系统命令注入漏洞
CVE-2020-27867 多款Netgear产品命令注入漏洞

IV. Related Vulnerabilities

Same product: Multiple Routers
Same vendor: NETGEAR
Same weakness: CWE-288

V. Comments for CVE-2020-27866

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