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CVE-2021-27251

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受影响的设备安装上执行任意代码。

AI Predicted 9.8 Difficulty: Moderate EPSS 0.73% · P53

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-27251

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 execute arbitrary code on affected installations of NETGEAR Nighthawk R7800. Authentication is not required to exploit this vulnerability The specific flaw exists within handling of firmware updates. The issue results from a fallback to a insecure protocol to deliver updates. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12308.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文传输
Source: CVE Program / CVE List V5
Vulnerability Title
Netgear NETGEAR 安全漏洞
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受影响的设备安装上执行任意代码。
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 1.0.2.76 -

II. Public POCs for CVE-2021-27251

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III. Intelligence Information for CVE-2021-27251

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Vendor Advisories for CVE-2021-27251 (1)

Other References for CVE-2021-27251 (1)

Same Patch Batch · NETGEAR · 2021-04-14 · 3 CVEs total

CVE-2021-27253 Netgear NETGEAR 缓冲区错误漏洞
CVE-2021-27252 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-319

V. Comments for CVE-2021-27251

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