CVE-2015-1638
Microsoft Active Directory Federation Services (AD FS) 3.0 on Windows Server 2012 R2 does not...
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."
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2015-1638- CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2015-1638- Updated
- 2026-11-02
EUVDEUVD-2015-1768 No score
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."
- Record
EUVD-2015-1768- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r4hh-qx8q-mghc No score
Microsoft Active Directory Federation Services (AD FS) 3.0 on Windows Server 2012 R2 does not...
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."
- Record
GHSA-r4hh-qx8q-mghc- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2015-1638 is a medium vulnerability (CVSS 5.8) in Microsoft Windows Server 2012, published April 14, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 12.7%, the 96th percentile. No source names a fixed version.