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CVE-2021-27252

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 firmware 存在安全漏洞，攻击者可利用该漏洞对受影响的固件版本执行任意代码。

AI Predicted 9.8 Difficulty: Easy EPSS 1.12% · P65

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-27252

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 R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the vendor_specific DHCP opcode. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12216.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Netgear NETGEAR R7800 操作系统命令注入漏洞
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 firmware 存在安全漏洞，攻击者可利用该漏洞对受影响的固件版本执行任意代码。
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-2021-27252

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III. Intelligence Information for CVE-2021-27252

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Vendor Advisories for CVE-2021-27252 (1)

Other References for CVE-2021-27252 (1)

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

CVE-2021-27253 Netgear NETGEAR 缓冲区错误漏洞
CVE-2021-27251 Netgear NETGEAR 安全漏洞

IV. Related Vulnerabilities

Same product: R7800
Same vendor: NETGEAR
Same weakness: CWE-78

V. Comments for CVE-2021-27252

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