How to Verify Full TLS Certificate Chains Against CRLs via OpenSSL CLI
Security Boulevard, Tuesday, July 28th, 2026
Learn to verify TLS certificate revocation status across entire chains using OpenSSL command-line tools.
Certificate Authorities have revoked numerous certificates due to policy compliance issues enforced by the CAB Forum. Since browsers like Chrome use separate CRL systems, organizations may miss revocations detected by other browsers such as Firefox.
The article demonstrates a single OpenSSL command to automatically fetch and validate Certificate Revocation Lists, using crl_download to retrieve CRL Distribution Points and crl_check_all to verify revocation status across the entire certificate chain, enabling script-based validation.