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CVE-2026-20167— Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability

CVSS 7.7 · High EPSS 0.11% · P30
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I. Basic Information for CVE-2026-20167

Vulnerability Information
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Vulnerability Title
Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router. This vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IoT Field Network Director 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IoT Field Network Director（IoT-FND）是美国思科（Cisco）公司的一套端到端的物联网管理系统。该系统具有设备管理、资产跟踪和智能计量等功能。 Cisco IoT Field Network Director存在访问控制错误漏洞，该漏洞源于错误处理不当，可能导致经过身份验证的远程攻击者通过提交特制输入请求远程路由器上的未授权文件，导致路由器重新加载并造成拒绝服务。
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 IoT Field Network Director (IoT-FND) 4.5.1 -

II. Public POCs for CVE-2026-20167

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III. Intelligence Information for CVE-2026-20167

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IV. Related Vulnerabilities

Same product: Cisco IoT Field Network Director (IoT-FND)
Same vendor: Cisco
Same weakness: CWE-284

V. Comments for CVE-2026-20167

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