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CVE-2025-20140

CVSS 7.4 · High EPSS 0.10% · P28
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I. Basic Information for CVE-2025-20140

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent wireless attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of IPv6 network requests from an associated wireless IPv6 client to an affected device. To associate a client to a device, an attacker may first need to authenticate to the network, or associate freely in the case of a configured open network. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to stop responding, resulting in a DoS condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的内存分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XE 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE是美国思科（Cisco）公司的一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS XE存在安全漏洞，该漏洞源于内存管理不当，可能导致拒绝服务攻击。
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 XE Software 16.4.1 -

II. Public POCs for CVE-2025-20140

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III. Intelligence Information for CVE-2025-20140

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Same Patch Batch · Cisco · 2025-05-07 · 35 CVEs total

CVE-2025-2018810.0 CRITICALCisco IOS XE 信任管理问题漏洞
CVE-2025-201868.8 HIGHCisco IOS XE 操作系统命令注入漏洞
CVE-2025-201548.6 HIGHCisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability
CVE-2025-201828.6 HIGHCisco Adaptive Security Appliance Software, Firepower Threat Defense Software and IOS XE S
CVE-2025-201628.6 HIGHCisco IOS XE 资源管理错误漏洞
CVE-2025-201648.3 HIGHCisco IOS 安全漏洞
CVE-2025-201227.8 HIGHCisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
CVE-2025-201927.7 HIGHCisco IOS XE 安全漏洞
CVE-2025-202027.4 HIGHCisco IOS XE Wireless Controller Software 安全漏洞
CVE-2025-201917.4 HIGHMultiple Cisco Products Denial of Service Vulnerability
CVE-2025-201897.4 HIGHCisco IOS XE 安全漏洞
CVE-2025-202107.3 HIGHCisco Catalyst Center Unprotected API Endpoint
CVE-2025-201976.7 MEDIUMCisco IOS XE 输入验证错误漏洞
CVE-2025-202006.7 MEDIUMCisco IOS XE 代码问题漏洞
CVE-2025-202016.7 MEDIUMCisco IOS XE 代码问题漏洞
CVE-2025-201876.5 MEDIUMCisco SD-WAN Manager Software Arbitrary File Creation Vulnerability
CVE-2025-201906.5 MEDIUMCisco IOS XE Wireless Controller Software 访问控制错误漏洞
CVE-2025-201936.5 MEDIUMCisco IOS XE 操作系统命令注入漏洞
CVE-2025-201556.0 MEDIUMCisco IOS XE 安全漏洞
CVE-2025-201575.9 MEDIUMCisco Catalyst vManage Certificate Validation Vulnerability

Showing top 20 of 35 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-789

V. Comments for CVE-2025-20140

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