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CVE-2021-27254

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是美国网件（Netgear）公司的一款路由器。连接两个或多个网络的硬件设备，在网络间起网关的作用。 NETGEAR Nighthawk R7800 存在安全漏洞，攻击者可利用该漏洞在root上下文中执行任意代码。

AI Predicted 9.8 Difficulty: Easy EPSS 0.52% · P42
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I. Basic Information for CVE-2021-27254

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 R7800. Authentication is not required to exploit this vulnerability. The specific flaw exists within the apply_save.cgi endpoint. This issue results from the use of hard-coded encryption key. An attacker can leverage this vulnerability to execute arbitrary code in the context of root. Was ZDI-CAN-12287.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的口令
Source: CVE Program / CVE List V5
Vulnerability Title
Netgear NETGEAR 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netgear NETGEAR是美国网件（Netgear）公司的一款路由器。连接两个或多个网络的硬件设备，在网络间起网关的作用。 NETGEAR Nighthawk R7800 存在安全漏洞，攻击者可利用该漏洞在root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-2021-27254

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III. Intelligence Information for CVE-2021-27254

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Vendor Advisories for CVE-2021-27254 (1)

Other References for CVE-2021-27254 (1)

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

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
CVE-2021-27257 Netgear NETGEAR R7800 信任管理问题漏洞

IV. Related Vulnerabilities

Same product: R7800
Same vendor: NETGEAR
Same weakness: CWE-259

V. Comments for CVE-2021-27254

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