How severe is CVE-2014-6331?

CVE-2014-6331 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-6331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-6331?

CVE-2014-6331 primarily affects Microsoft Active Directory Federation Services. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-6331?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-6331 published?

CVE-2014-6331 was published on 2014-11-11 and last updated on 2026-06-17.

CVE-2014-6331

CVE-2014-6331 is a medium-severity vulnerability in Microsoft Active Directory Federation Services with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Active Directory Federation Services
Published: 2014-11-11
Last modified: 2026-06-17

Description

Microsoft Active Directory Federation Services (AD FS) 2.0, 2.1, and 3.0, when a configured SAML Relying Party lacks a sign-out endpoint, does not properly process logoff actions, which makes it easier for remote attackers to obtain access by leveraging an unattended workstation, aka "Active Directory Federation Services Information Disclosure Vulnerability."

Frequently asked questions

What is CVE-2014-6331?: Microsoft Active Directory Federation Services (AD FS) 2.0, 2.1, and 3.0, when a configured SAML Relying Party lacks a sign-out endpoint, does not properly process logoff actions, which makes it easier for remote attackers to obtain access by leveraging an unattended workstation, aka "Active Directory Federation Services Information Disclosure Vulnerability."
How severe is CVE-2014-6331?: CVE-2014-6331 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-6331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-6331?: CVE-2014-6331 primarily affects Microsoft Active Directory Federation Services. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-6331?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-6331 published?: CVE-2014-6331 was published on 2014-11-11 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:microsoft:active_directory_federation_services:2.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:active_directory_federation_services:2.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:active_directory_federation_services:3.0:*:*:*:*:*:*:*

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