If by "good" you mean vulnerable, that depends on how it keeps time.

If you can feed it a fake NTP server that's set in the past, then it could potentially stay vulnerable forever, especially if you're the one doing a MITM on it... otherwise attempts to contact third-party servers you're not masquerading as will likely fail due to expired certs (some time in 2028 IIRC for the eMudhra ones).