CVE-2023-20003: Cisco Business Wireless Access Points Social Login Guest User Authentication Bypass Vulnerability

Severity: high (CVSS 8.8 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: 2023-05-18 · updated 2026-06-17
Weakness: CWE-288

Description

A vulnerability in the social login configuration option for the guest users of Cisco Business Wireless Access Points (APs) could allow an unauthenticated, adjacent attacker to bypass social login authentication. This vulnerability is due to a logic error with the social login implementation. An attacker could exploit this vulnerability by attempting to authenticate to an affected device. A successful exploit could allow the attacker to access the Guest Portal without authentication.

Affected products

Cisco Business 140Ac Access Point Firmware: before 10.8.1.0 — fixed in 10.8.1.0
Cisco Business 141Acm Firmware: before 10.8.1.0 — fixed in 10.8.1.0
Cisco Business 142Acm Firmware: before 10.8.1.0 — fixed in 10.8.1.0
Cisco Business 143Acm Firmware: before 10.8.1.0 — fixed in 10.8.1.0
Cisco Business 145Ac Access Point Firmware: before 10.8.1.0 — fixed in 10.8.1.0
Cisco Business 150Ax Access Point Firmware: 10.4.2
Cisco Business 151Axm Firmware: 10.4.2
Cisco Business 240Ac Access Point Firmware: before 10.8.1.0 — fixed in 10.8.1.0

How to fix

Upgrade to a fixed version: Cisco Business 140Ac Access Point Firmware 10.8.1.0; Cisco Business 141Acm Firmware 10.8.1.0; Cisco Business 142Acm Firmware 10.8.1.0; Cisco Business 143Acm Firmware 10.8.1.0; Cisco Business 145Ac Access Point Firmware 10.8.1.0; Cisco Business 240Ac Access Point Firmware 10.8.1.0. Check the vendor advisory for mitigations.

References

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