I don't think there are any acute issues like heartbleed (other than the possibility that RC4 is completely broken to secure against state-level adversaries, or that your ssl key might be compromised now or in the future), but the downvoted-to-hell points made higher up are that you should have been aware enough of best practices to improve your ssl config a long time ago.

It doesn't inspire confidence that you're still working at enabling TLS 1.2 or some AES ciphersuites with PFS. ... and at de-prioritizing RC4 if you need to keep it enabled. (A competitor, crashplan, seems to think 3DES is enough to support older clients; they've disabled RC4 completely. Mozilla thinks so too, even in their "old backward compatibility" recommendations: https://wiki.mozilla.org/Security/Server_Side_TLS )