Novell GroupWise 8.0 up to (and including) 8.02 Hot Patch 2.
A vulnerability exists in the Oracle "Outside In" technology used by GroupWise to view Microsoft DOCX file attachments that could potentially allow an unauthenticated attacker could execute arbitrary code.
This issue was reported to Novell by Anonymous working with TippingPoint's Zero Day Initiative (http://www.zerodayinitiative.com, ZDI-CAN-966).
See also Oracle's July 2011 "Critical Patch Update Advisory" at http://www.oracle.com/technetwork/topics/security/cpujuly2011-313328.html
To resolve this issue, apply GroupWise 8.0 Hot Patch 3 (HP3) or later.
Previous versions of GroupWise are likely also vulnerable but are no longer supported. Customers on earlier versions of GroupWise should upgrade to version 8.02HP3 in order to secure their GroupWise system.