DigiCert Revoking Certs With Less Than 24 Hours Notice

In an incident report today, DigiCert says it discovered that some CNAME-based validations did not include the required underscore prefix, affecting about 0.4% of their domain validations. According to CA/Browser Forum (CABF) rules, certificates with validation issues must be revoked within 24 hours, prompting DigiCert to take immediate action. DigiCert says impacted customers "have been notified." New submitter jdastrup first shared the news, writing: Due to a mistake going back years that has recently been discovered, DigiCert is required by the CABF to revoke any certificate that used the improper Domain Control Validation (DCV) CNAME record in 24 hours. This could literally be thousands of SSL certs. This could take a lot of time and potentially cause outages worldwide starting July 30 at 19:30 UTC. Be prepared for a long night of cert renewals. DigiCert support line is completely jammed.

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