SPE process(symcscan daemon started crashing in environment where AntiVirus definition is updated with RR 20160418.022 & greater).
The crashing issue is caused by a heap buffer overrun in the handling of macros inside (AntiVirus Engine) AVE’s Macro engine.
Symantec is aware of this issue and will update this document when a solution becomes available. It may not be necessary to log a support case on this issue. Please subscribe to this article to be notified of any updates.
Symantec has released rapid release definition to mitigate the issue. Rapid Release Sequence 176535 extended version 19th April 2016 rev 36 (or higher) will include the fix.