Microsoft Crypto API 5.131.2600.2180 through 6.0, as used in Outlook, Windows Live Mail, and Office 2007, performs Certificate Revocation List (CRL) checks by using an arbitrary URL from a certificate embedded in a (1) S/MIME e-mail message or (2) signed document, which allows remote attackers to obtain reading times and IP addresses of recipients, and port-scan results, via a crafted certificate with an Authority Information Access (AIA) extension.

Microsoft PowerPoint 2002 SP3, 2003 SP3, and 2007 SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2; and PowerPoint Viewer 2007 SP2 do not properly handle Office Art containers that have invalid records, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a PowerPoint document with a container that triggers certain access to an uninitialized object, aka "OfficeArt Atom RCE Vulnerability."