Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service Vulnerabilities
Description
Multiple vulnerabilities in CAPWAP protocol processing of Cisco IOS XE Software for Catalyst 9000 Wireless Controllers allow unauthenticated remote DoS.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Multiple vulnerabilities in CAPWAP protocol processing of Cisco IOS XE Software for Catalyst 9000 Wireless Controllers allow unauthenticated remote DoS.
Vulnerability
The vulnerabilities exist in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers. They are due to insufficient validation of CAPWAP packets. Affected versions include those prior to the fixed releases mentioned in the Cisco advisory [1].
Exploitation
An unauthenticated, remote attacker can exploit these vulnerabilities by sending a malformed CAPWAP packet to an affected device. No authentication or prior access is required.
Impact
A successful exploit could cause the affected device to crash and reload, resulting in a denial of service (DoS) condition. This impacts availability.
Mitigation
Cisco has released free software updates to address these vulnerabilities. Customers should upgrade to the fixed versions as indicated in the Cisco Security Advisory [1]. No workarounds are currently available.
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: unspecified
- Range: n/a
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-gmNjdKOYmitrevendor-advisoryx_refsource_CISCO
News mentions
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