STIGQter: STIG Summary: Microsoft Windows Server 2025 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

Windows Server 2025 must have the US DOD CCEB Interoperability Root CA cross-certificates in the Untrusted Certificates Store on unclassified systems.

DISA Rule

SV-278194r1182313_rule

Vulnerability Number

V-278194

Group Title

SRG-OS-000066-GPOS-00034

Rule Version

WN25-PK-000030

Severity

CAT II

CCI(s)

• CCI-000185 - For public key-based authentication, validate certificates by constructing and verifying a certification path to an accepted trust anchor including checking certificate status information.
• CCI-002470 - Only allow the use of organization-defined certificate authorities for verification of the establishment of protected sessions.

Weight

10

Fix Recommendation

Install the US DOD CCEB Interoperability Root CA cross-certificate on unclassified systems.

Issued To - Issued By - Thumbprint

DOD Root CA 3 - US DOD CCEB Interoperability Root CA 2 - AF132AC65DE86FC4FB3FE51FD637EBA0FF0B12A9

DOD Root CA 3 - US DOD CCEB Interoperability Root CA 2 - 929BF3196896994C0A201DF4A5B71F603FEFBF2E

Administrators must run the Federal Bridge Certification Authority (FBCA) Cross-Certificate Removal Tool once as an administrator and once as the current user.

The FBCA Cross-Certificate Remover Tool and User Guide are available on Cyber Exchange at https://cyber.mil/pki-pke/tools-configuration-files.

Check Contents

This is applicable to unclassified systems. It is not applicable for others.

Open PowerShell as an administrator.

Execute the following command:

Get-ChildItem -Path Cert:Localmachine\disallowed | Where Issuer -Like "*CCEB Interoperability*" | FL Subject, Issuer, Thumbprint, NotAfter

If the following certificate "Subject", "Issuer", and "Thumbprint" information is not displayed, this is a finding.

Subject: CN=DOD Root CA 3, OU=PKI, OU=DOD, O=U.S. Government, C=US
Issuer: CN=US DOD CCEB Interoperability Root CA 2, OU=PKI, OU=DOD, O=U.S. Government, C=US
Thumbprint: AF132AC65DE86FC4FB3FE51FD637EBA0FF0B12A9
NotAfter: 8/26/2025 9:07:50 AM

Subject: CN=DOD Root CA 3, OU=PKI, OU=DOD, O=U.S. Government, C=US
Issuer: CN=US DOD CCEB Interoperability Root CA 2, OU=PKI, OU=DOD, O=U.S. Government, C=US
Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E
NotAfter: 9/27/2025

Alternately, use the Certificates MMC snap-in:

Run "MMC".

Select "File", "Add/Remove Snap-in".

Select "Certificates" and click "Add".

Select "Computer account" and click "Next".

Select "Local computer: (the computer this console is running on)" and click "Finish".

Click "OK".

Expand "Certificates" and navigate to Untrusted Certificates >> Certificates.

For each certificate with "US DOD CCEB Interoperability Root CA ..." under "Issued By":

Right-click the certificate and select "Open".

Select the "Details" tab.

Scroll to the bottom and select "Thumbprint".

If the certificate below is not listed or the value for the "Thumbprint" field is not as noted, this is a finding:

Issued To: DOD Root CA 3
Issued By: US DOD CCEB Interoperability Root CA 2
Thumbprint: AF132AC65DE86FC4FB3FE51FD637EBA0FF0B12A9
Valid to: Friday, August 26, 2025

Issued To: DOD Root CA 3
Issued By: US DOD CCEB Interoperability Root CA 2
Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E
Valid: Friday, September 27, 2025

Vulnerability Number

V-278194

Documentable

False

Rule Version

WN25-PK-000030

Severity Override Guidance

This is applicable to unclassified systems. It is not applicable for others.

Open PowerShell as an administrator.

Execute the following command:

Get-ChildItem -Path Cert:Localmachine\disallowed | Where Issuer -Like "*CCEB Interoperability*" | FL Subject, Issuer, Thumbprint, NotAfter

If the following certificate "Subject", "Issuer", and "Thumbprint" information is not displayed, this is a finding.

Subject: CN=DOD Root CA 3, OU=PKI, OU=DOD, O=U.S. Government, C=US
Issuer: CN=US DOD CCEB Interoperability Root CA 2, OU=PKI, OU=DOD, O=U.S. Government, C=US
Thumbprint: AF132AC65DE86FC4FB3FE51FD637EBA0FF0B12A9
NotAfter: 8/26/2025 9:07:50 AM

Subject: CN=DOD Root CA 3, OU=PKI, OU=DOD, O=U.S. Government, C=US
Issuer: CN=US DOD CCEB Interoperability Root CA 2, OU=PKI, OU=DOD, O=U.S. Government, C=US
Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E
NotAfter: 9/27/2025

Alternately, use the Certificates MMC snap-in:

Run "MMC".

Select "File", "Add/Remove Snap-in".

Select "Certificates" and click "Add".

Select "Computer account" and click "Next".

Select "Local computer: (the computer this console is running on)" and click "Finish".

Click "OK".

Expand "Certificates" and navigate to Untrusted Certificates >> Certificates.

For each certificate with "US DOD CCEB Interoperability Root CA ..." under "Issued By":

Right-click the certificate and select "Open".

Select the "Details" tab.

Scroll to the bottom and select "Thumbprint".

If the certificate below is not listed or the value for the "Thumbprint" field is not as noted, this is a finding:

Issued To: DOD Root CA 3
Issued By: US DOD CCEB Interoperability Root CA 2
Thumbprint: AF132AC65DE86FC4FB3FE51FD637EBA0FF0B12A9
Valid to: Friday, August 26, 2025

Issued To: DOD Root CA 3
Issued By: US DOD CCEB Interoperability Root CA 2
Thumbprint: 929BF3196896994C0A201DF4A5B71F603FEFBF2E
Valid: Friday, September 27, 2025

Check Content Reference

M

Target Key

5719