CVE-2015-1638

Name: CVE-2015-1638
Creator: NVD / NIST
Published: 2015-04-14T20:59:02.31+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 12.81%

Last modified Jun 17, 2026

CVE-2015-1638 is a vulnerability of currently unknown severity. Microsoft Active Directory Federation Services (AD FS) 3.0 on Windows Server 2012 R2 does not properly handle logoff actions, which allows remote attackers to bypass intended access restrictions by leveraging an unattended workstation, aka "Active Directory Federation Services Information Disclosure Vulnerability.". EPSS estimates a 12.81% chance of exploitation in the next 30 days.

Description

Microsoft Active Directory Federation Services (AD FS) 3.0 on Windows Server 2012 R2 does not properly handle logoff actions, which allows remote attackers to bypass intended access restrictions by leveraging an unattended workstation, aka "Active Directory Federation Services Information Disclosure Vulnerability."

Metrics

EPSS Probability

12.81%

95.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Microsoft	Windows Server 2012	r2

References

Timeline

Published: Apr 14, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-1638?

How severe is CVE-2015-1638?

Severity scoring for CVE-2015-1638 is pending analysis. The EPSS model estimates a 12.81% probability of exploitation in the next 30 days.

How do I fix CVE-2015-1638?

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-2015-1638?

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

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Source: NVD / NIST