TI-2020-02822 Aliases CVE-2020-3262 GHSA-h4wq-fxpq-gmg2

Cisco Wireless LAN Controller CAPWAP Denial of Service Vulnerability

MEDIUM 42CWE-20Published 2020-04-15 · Updated 2024-11-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol handler of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of CAPWAP packets. 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 restart, resulting in a DoS condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0147 73rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Aironet Access Point Software	all versions	—	No fix listed	CNA

Cisco Aironet Access Point Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:5508_wireless_controller_firmware:8.8\(120.0\):::::::*	8.8(120.0)	Vulnerable	Cisco
cpe:2.3:h:cisco:5508_wireless_controller:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:o:cisco:5520_wireless_controller_firmware:8.8\(120.0\):::::::*	8.8(120.0)	Vulnerable	Cisco
cpe:2.3:h:cisco:5520_wireless_controller:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:o:cisco:5508_wireless_controller_firmware:8.8\(120.0\):*:*:*:*:*:*:* Versions 8.8(120.0) Vulnerable ·Cisco
cpe:2.3:h:cisco:5508_wireless_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:o:cisco:5520_wireless_controller_firmware:8.8\(120.0\):*:*:*:*:*:*:* Versions 8.8(120.0) Vulnerable ·Cisco
cpe:2.3:h:cisco:5520_wireless_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-3262
2026-10-03 Alias added: GHSA-h4wq-fxpq-gmg2

References

Advisory 1

20200415 Cisco Wireless LAN Controller CAPWAP Denial of Service Vulnerability

TI-2020-02831 Cisco Wireless LAN Controller 802.11 Generic Advertisement Service Denial of Service Vulnerability CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences