CVE-2011-2012

Name: CVE-2011-2012
Creator: NVD / NIST
Published: 2011-10-12T02:52:44.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 16.59%

Last modified Jun 16, 2026

CVE-2011-2012 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 16.59% chance of exploitation in the next 30 days.

Description

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."

Metrics

EPSS Probability

16.59%

96.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Microsoft	Forefront Unified Access Gateway	2010

References

Timeline

Published: Oct 12, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2012?

How severe is CVE-2011-2012?

Severity scoring for CVE-2011-2012 is pending analysis. The EPSS model estimates a 16.59% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2012?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2012?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST