Buffer overflow in the Lotus Quickr for Domino ActiveX control in qp2.cab in IBM Lotus Quickr 8.1 before FP 8.1.0.32-001a, 8.2 before FP 8.2.0.28-001a, and 8.5.1 before FP 8.5.1.39-002a for Domino allows remote attackers to execute arbitrary code via a crafted web site.