CVE-2011-5053: Wi-Fi Wifi Protected Setup Protocol

Medium severity, CVSS 5.8. EPSS: 3.3% chance of exploitation in the next 30 days.

The Wi-Fi Protected Setup (WPS) protocol, when the "external registrar" authentication method is used, does not properly inform clients about failed PIN authentication, which makes it easier for remote attackers to discover the PIN value, and consequently discover the Wi-Fi network password or reconfigure an access point, by reading EAP-NACK messages.

Affected products

• Wi-Fi Wifi Protected Setup Protocol: any version

Published 2012-01-06. Last modified 2026-06-16.