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CVE-2026-20086

Quick assessment

Affected
Cisco Cisco IOS XE Software
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.

Cisco IOS XE Wireless Controller software是美国思科（Cisco）公司的一个无线局域网控制器。提供一个管理网络功能 Cisco IOS XE Wireless Controller software存在安全漏洞，该漏洞源于对畸形CAPWAP数据包处理不当，可能导致拒绝服务。

CVSS 8.6 · High EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-20086

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) packets of Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of a malformed CAPWAP packet. An attacker could exploit this vulnerability by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload unexpectedly, resulting in a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缺失值处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE Wireless Controller software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE Wireless Controller software是美国思科（Cisco）公司的一个无线局域网控制器。提供一个管理网络功能 Cisco IOS XE Wireless Controller software存在安全漏洞，该漏洞源于对畸形CAPWAP数据包处理不当，可能导致拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XE Software 17.14.1 -

II. Public POCs for CVE-2026-20086

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III. Intelligence Information for CVE-2026-20086

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Vendor Advisories for CVE-2026-20086 (1)

Same Patch Batch · Cisco · 2026-03-25 · 13 CVEs total

CVE-2026-20084 8.6 HIGH Cisco IOS XE Software 资源管理错误漏洞
CVE-2026-20012 8.6 HIGH Cisco多款产品 安全漏洞
CVE-2026-20125 7.7 HIGH Cisco IOS和Cisco IOS XE Software 安全漏洞
CVE-2026-20004 7.4 HIGH Cisco IOS XE Software 安全漏洞
CVE-2026-20110 6.5 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2026-20083 6.5 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2026-20104 6.1 MEDIUM Cisco多款产品 安全漏洞
CVE-2026-20115 6.1 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2026-20114 5.4 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2026-20108 5.4 MEDIUM Cisco Catalyst SD-WAN Manager（Cisco SD-WAN vManage） 跨站脚本漏洞
CVE-2026-20113 5.3 MEDIUM Cisco IOS XE Software 注入漏洞
CVE-2026-20112 4.8 MEDIUM Cisco IOS XE Software 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-230

V. Comments for CVE-2026-20086

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