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CVE-2023-20112: Cisco Access Point Software Association Request Denial of Service Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-23 · updated 2026-06-17
• Weakness: CWE-126

Description

A vulnerability in Cisco access point (AP) software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of certain parameters within 802.11 frames. An attacker could exploit this vulnerability by sending a wireless 802.11 association request frame with crafted parameters to an affected device. A successful exploit could allow the attacker to cause an unexpected reload of an affected device, resulting in a DoS condition.

Affected products

• Cisco Business 150Ax Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Business 151Axm Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9105Ax Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9105Axi Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9105Axw Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9105I Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9105W Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9115 Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9115Ax Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9115Axe Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9115Axi Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9117 Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9117Ax Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9117Axi Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9120 Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9120Ax Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9120Axe Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9120Axi Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9120Axp Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9124 Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9124Ax Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9124Axd Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9124Axi Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9130 Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9130Ax Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9130Axe Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9130Axi Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9136 Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9162 Firmware: before 10.3.2.0 — fixed in 10.3.2.0
• Cisco Catalyst 9164 Firmware: before 10.3.2.0 — fixed in 10.3.2.0

How to fix

Upgrade to a fixed version: Cisco Business 150Ax Firmware 10.3.2.0; Cisco Business 151Axm Firmware 10.3.2.0; Cisco Catalyst 9105Ax Firmware 10.3.2.0; Cisco Catalyst 9105Axi Firmware 10.3.2.0; Cisco Catalyst 9105Axw Firmware 10.3.2.0; Cisco Catalyst 9105I Firmware 10.3.2.0; Cisco Catalyst 9105W Firmware 10.3.2.0; Cisco Catalyst 9115 Firmware 10.3.2.0; Cisco Catalyst 9115Ax Firmware 10.3.2.0; Cisco Catalyst 9115Axe Firmware 10.3.2.0; Cisco Catalyst 9115Axi Firmware 10.3.2.0; Cisco Catalyst 9117 Firmware 10.3.2.0. Check the vendor advisory for mitigations.

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-assoc-dos-D2SunWK2
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-assoc-dos-D2SunWK2

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