All IMSVA versions are not impacted by this CVE because they don't use the module mod_http2.

All IMSVA versions are not impacted by this CVE because they don't use the module mod_http2.
Interscan Messaging Security Virtual Appliance 9.1 , Interscan Messaging Security Virtual Appliance 9.0
Learn about CVE-2017-7659 and its impact to IMSVA.
Vulnerability information:
A NULL pointer dereference flaw was found in the mod_http2 module of httpd. A remote attacker could use this flaw to cause httpd child process to crash via a specially crafted HTTP/2 request.
References:
All IMSVA versions are not impacted by this CVE because they don't use the module mod_http2.