CVE-2026-20086
published 2026-03-25CVE-2026-20086: A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) packets of Cisco IOS XE Wireless Controller Software for the…
PriorityP351high8.6CVSS 3.1
AVNACLPRNUINSCCNINAH
EPSS
0.35%
27.7th percentile
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
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | cisco_ios_xe_software | — | — |
| cisco | ios_xe_wireless_controller | — | — |
CVSS provenance
nvdv3.18.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
vendor_cisco8.6HIGH
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Cisco
Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family CAPWAP Denial of Service Vulnerability
vendor_cisco·2026-03-25·CVSS 8.6
CVE-2026-20086 [HIGH] CWE-230 Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family CAPWAP Denial of Service Vulnerability
Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family CAPWAP Denial of Service Vulnerability
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.
Cisco has released software updates that address this vulnerability. There ar
Cisco
Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family CAPWAP Denial of Service Vulnerability
vendor_cisco·CVSS 3.1
CVE-2026-20086 Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family CAPWAP Denial of Service Vulnerability
CVE-2026-20086: Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family CAPWAP Denial of Service Vulnerability
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. Cisco has released software updates that address this vulnerabil
GHSA
GHSA-m53c-9wh4-q9hq: A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) packets of Cisco IOS XE Wireless Controller Software
ghsa_unreviewed·2026-03-25
CVE-2026-20086 [HIGH] CWE-230 GHSA-m53c-9wh4-q9hq: A vulnerability in the processing of Control and Provisioning of Wireless Access Points (CAPWAP) packets of Cisco IOS XE Wireless Controller Software
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-03-25
Published