Verify the US DoD CCEB Interoperability Root CA cross-certificate is installed on unclassified systems as an Untrusted Certificate.
Run "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: 9B74964506C7ED9138070D08D5F8B969866560C8
NotAfter: 7/18/2025
Alternately use the Certificates MMC snap-in:
Run "MMC".
Select "File", "Add/Remove Snap-in".
Select "Certificates", click "Add".
Select "Computer account", click "Next".
Select "Local computer: (the computer this console is running on)", 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 on 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: 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: 9B74964506C7ED9138070D08D5F8B969866560C8
NotAfter: 7/18/2025
Certificate bundles published by the PKI can be found at https://crl.gds.disa.mil/.