http://blog.clamav.net/2018/01/clamav-0993-has-been-released.html according to https://www.heise.de/security/meldung/Jetzt-patchen-Angriffe-auf-Viren-Scanner-ClamAV-3951801.html there are already attacks in the wild
*** This bug has been marked as a duplicate of bug 1538844 ***