During Microsoft Exchange and / or Microsoft SQL backups the Backup Exec Job Engine (bengine.exe) may crash.
The crash dump will show the following
A hotfix is now available for this issue in the current version(s) of the product(s) mentioned in this article. Refer to the Hotfix link under Related Articles at the end of this article to obtain the hotfix needed to resolve the issue.
Backup Exec 2012 Rev 1798 Hotfix 199866 - http://www.symantec.com/docs/TECH199866