PT-2026-27791 · Cisco · Catalyst Cw9800+1

Published 2026-03-25 · Updated 2026-03-25 · CVE-2026-20086

Positive Technologies · (AI Summary)

CVSS v3.1

8.6

High

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family (affected versions not specified)

Description A flaw exists in how the software processes Control and Provisioning of Wireless Access Points (CAPWAP) packets. This could allow a remote attacker, without needing to authenticate, to disrupt service on a device. The issue stems from the software's inability to correctly handle a specially crafted CAPWAP packet. Sending such a packet could force the device to restart unexpectedly, leading to a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-230

Related Identifiers

CVE-2026-20086

Affected Products

Catalyst Cw9800

Cisco Ios Xe Wireless Controller

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-20086 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-dos-hnX5KGOm · Vendor Advisory
• https://twitter.com/CveFindCom/status/2036846431407870000 · Twitter Post