CVE-2026-20086

Summary

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.

Affected Software

VendorProductVersion RangeStatus
CiscoCisco IOS XE Software17.14.1affected
CiscoCisco IOS XE Software17.15.1affected
CiscoCisco IOS XE Software17.15.2affected
CiscoCisco IOS XE Software17.15.3affected
CiscoCisco IOS XE Software17.15.2baffected
CiscoCisco IOS XE Software17.15.4affected
CiscoCisco IOS XE Software17.15.4daffected
CiscoCisco IOS XE Software17.16.1affected
CiscoCisco IOS XE Software17.17.1affected
CiscoCisco IOS XE Software17.18.1affected

Weaknesses

  • CWE-230: Improper Handling of Missing Values

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References