MS16- – Important: Security Update for NPS RADIUS Server to Address Denial of Service (3133043) – Version: 1.0

Severity Rating: Important
Revision Note: V1.0 (February 9, 2016): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could cause denial of service on a Network Policy Server (NPS) or an Internet Authentication Service (IAS) if an attacker sends specially crafted username strings to the IAS or NPS, which could prevent RADIUS authentication on the NPS or IAS.
Source: ms-security