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CVE-2021-27257

Quick assessment

Affected
NETGEAR R7800
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netgear NETGEAR R7800是美国网件（Netgear）公司的一款无线路由器。 NETGEAR R7800 存在信任管理问题漏洞，该漏洞源于没有对服务器提供的证书进行适当的验证，攻击者可利用该漏洞在上下文中执行任意代码。

AI Predicted 8.2 Difficulty: Easy EPSS 0.32% · P23
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I. Basic Information for CVE-2021-27257

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 compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Netgear NETGEAR R7800 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netgear NETGEAR R7800是美国网件（Netgear）公司的一款无线路由器。 NETGEAR R7800 存在信任管理问题漏洞，该漏洞源于没有对服务器提供的证书进行适当的验证，攻击者可利用该漏洞在上下文中执行任意代码。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NETGEAR R7800 firmware version 1.0.2.76 -

II. Public POCs for CVE-2021-27257

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III. Intelligence Information for CVE-2021-27257

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Vendor Advisories for CVE-2021-27257 (1)

Other References for CVE-2021-27257 (1)

Same Patch Batch · NETGEAR · 2021-03-05 · 4 CVEs total

CVE-2021-27254 Netgear NETGEAR 信任管理问题漏洞
CVE-2021-27255 Netgear NETGEAR R7800 访问控制错误漏洞
CVE-2021-27256 Netgear NETGEAR R7800 操作系统命令注入漏洞

IV. Related Vulnerabilities

Same product: R7800
Same vendor: NETGEAR
Same weakness: CWE-295

V. Comments for CVE-2021-27257

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