Microsoft Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel Viewer 2007 SP3, Excel Services on SharePoint Server 2010 SP2, and Excel Services on SharePoint Server 2013 SP1 allow remote attackers to bypass the ASLR protection mechanism via a crafted spreadsheet, aka "Microsoft Excel ASLR Bypass Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-070