SSL certificate mismatch on Comodo download CDN (security issue)

extrememk · March 21, 2026, 7:57pm

When trying to download Comodo Internet Security from:

Firefox blocks it with:
SSL_ERROR_BAD_CERT_DOMAIN

The certificate presented is for:
*.b-cdn.net

This creates a potential security risk and prevents download.

Please fix CDN SSL configuration.

Tested on Firefox (latest version).

Citizen_K · March 21, 2026, 8:11pm

Thank you for reporting. Another user has also reported this. I have sent a message to Comodo.

This problem affects the download of installers and is possibly the cause of the failure of definition updates by the CIS client.

If you discard the warning you will be taken to a landing page of Bunny CDN with the following message:

Alvargon · March 22, 2026, 1:48am

Yes exactly, Is it a temp issue them?