CVE-2022-20945

Cisco Catalyst 9100 Series Access Points Association Request Denial of Service Vulnerability

MEDIUM
6.5
CVSS Score
Published: September 30, 2022 at 06:46 PM UTC
Updated: June 17, 2026 at 04:25 AM UTC
9 products affected across 1 vendorCatalyst 9800-40 FirmwareCatalyst 9800-80 FirmwareCatalyst 9800-cl Firmware

Using Cisco Aironet Access Point Software (IOS XE Controller) by Cisco?

Get instant alerts when new vulnerabilities affect Cisco Aironet Access Point Software (IOS XE Controller) - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

A vulnerability in the 802.11 association frame validation of Cisco Catalyst 9100 Series Access Points (APs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of certain parameters within association request frames received by the AP. An attacker could exploit this vulnerability by sending a crafted 802.11 association request to a nearby device. An exploit could allow the attacker to unexpectedly reload the device, resulting in a DoS condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

17.6 ≤ v < 17.6.4
Affected range stops below 17.6.4, so it looks safe — our inference, not a vendor statement
cisco-catalyst-9800-40 (same device)
17.6 ≤ v < 17.6.4
Affected range stops below 17.6.4, so it looks safe — our inference, not a vendor statement
cisco-catalyst-9800-80 (same device)
17.6 ≤ v < 17.6.4
Affected range stops below 17.6.4, so it looks safe — our inference, not a vendor statement
cisco-catalyst-9800-cl (same device)
17.6 ≤ v < 17.6.4
Affected range stops below 17.6.4, so it looks safe — our inference, not a vendor statement
cisco-catalyst-9800-l (same device)
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-120CWE-20

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card