CVE-2023-20268

Cisco Access Point Software Uncontrolled Resource Consumption Vulnerability

MEDIUM
4.7
CVSS Score
Published: September 27, 2023 at 05:22 PM UTC
Updated: June 17, 2026 at 05:30 AM UTC
9 products affected across 1 vendorWireless LAN Controller SoftwareBusiness 151AXM FirmwareBusiness 150AX Firmware

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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.3%

Description

A vulnerability in the packet processing functionality of Cisco access point (AP) software could allow an unauthenticated, adjacent attacker to exhaust resources on an affected device.  This vulnerability is due to insufficient management of resources when handling certain types of traffic. An attacker could exploit this vulnerability by sending a series of specific wireless packets to an affected device. A successful exploit could allow the attacker to consume resources on an affected device. A sustained attack could lead to the disruption of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel and intermittent loss of wireless client traffic.

Affected

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

v < 10.6.2.0
Affected range stops below 10.6.2.0, so it looks safe — our inference, not a vendor statement
cisco-business-150ax (same device)
v < 10.6.2.0
Affected range stops below 10.6.2.0, so it looks safe — our inference, not a vendor statement
cisco-business-151axm (same device)
v < 17.3.817.4.0 ≤ v < 17.6.617.8.0 ≤ v < 17.9.4
Affected range stops below 17.3.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.6.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.9.4, so it looks safe — our inference, not a vendor statement
cisco-catalyst-9800-embedded-wireless-controller (same device)
v < 8.10.190.0
Affected range stops below 8.10.190.0, so it looks safe — our inference, not a vendor statement
All versions
All versions

Remediation

No guide yet

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

CVSS

4.7MEDIUMcisco
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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