CVE-2011-2012: Microsoft Forefront Unified Access Gateway

Medium severity, CVSS 5.0. EPSS: 16.6% chance of exploitation in the next 30 days.

Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2, and SP1 does not properly validate session cookies, which allows remote attackers to cause a denial of service (IIS outage) via unspecified network traffic, aka "Null Session Cookie Crash."

Affected products

• Microsoft Forefront Unified Access Gateway: version 2010 only

Published 2011-10-12. Last modified 2026-06-16.