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I. Basic Information for CVE-2021-34721
Vulnerability Information

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Vulnerability Title
Cisco IOS XR Software Command Injection Vulnerabilities
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details section of this advisory.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XR 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XR是美国思科(Cisco)公司的一套为其网络设备开发的操作系统。 Cisco IOS XR 软件存在安全漏洞,该漏洞源于软件中的XML配置管理器对于用户提供的命令的输入验证不足,漏洞可能允许经过身份验证的本地攻击者注入任意命令,这些命令将通过该漏洞执行。攻击者可利用该漏洞可以通过对设备进行身份验证并向受影响的命令提交精心设计的输入来利用这个漏洞。成功的利用可以允许攻击者访问底层。
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
VendorProductAffected VersionsCPESubscribe
CiscoCisco IOS XR Software n/a -
II. Public POCs for CVE-2021-34721
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III. Intelligence Information for CVE-2021-34721
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IV. Related Vulnerabilities
V. Comments for CVE-2021-34721

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