CVE-2015-1638

Windows Server 2012 vulnerability

CVSS

5.8

EPSS

12.8%

EPSS pct

96th

Exploited

No known

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."

Affected vendor

Microsoft

Affected product

Windows Server 2012

CVSS vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Weakness type (CWE)

CWE-264 — Permissions, Privileges, and Access Controls

Published

2015-04-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity.

Its EPSS score of 12.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2015-1638

Confirm whether Microsoft Windows Server 2012 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2015-1638.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-1638

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