CVE-2009-1136: Microsoft Isa Server

High severity, CVSS 9.3. EPSS: 62% chance of exploitation in the next 30 days.

The Microsoft Office Web Components Spreadsheet ActiveX control (aka OWC10 or OWC11), as distributed in Office XP SP3 and Office 2003 SP3, Office XP Web Components SP3, Office 2003 Web Components SP3, Office 2003 Web Components SP1 for the 2007 Microsoft Office System, Internet Security and Acceleration (ISA) Server 2004 SP3 and 2006 Gold and SP1, and Office Small Business Accounting 2006, when used in Internet Explorer, allows remote attackers to execute arbitrary code via a crafted call to the msDataSourceObject method, as exploited in the wild in July and August 2009, aka "Office Web Components HTML Script Vulnerability."

Affected products

• Microsoft Isa Server: version 2004 only; version 2006 only
• Microsoft Office: version 2003 only
• Microsoft Office Web Components: version 2003 only; version xp only
• Microsoft Office XP: version sp3 only

Published 2009-07-15. Last modified 2026-06-16.