CVE-2012-1856: Microsoft Office MSCOMCTL.OCX Remote Code Execution Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2022-03-03. EPSS: 72% chance of exploitation in the next 30 days.

The TabStrip ActiveX control in the Common Controls in MSCOMCTL.OCX in Microsoft Office 2003 SP3, Office 2003 Web Components SP3, Office 2007 SP2 and SP3, Office 2010 SP1, SQL Server 2000 SP4, SQL Server 2005 SP4, SQL Server 2008 SP2, SP3, R2, R2 SP1, and R2 SP2, Commerce Server 2002 SP4, Commerce Server 2007 SP2, Commerce Server 2009 Gold and R2, Host Integration Server 2004 SP1, Visual FoxPro 8.0 SP1, Visual FoxPro 9.0 SP2, and Visual Basic 6.0 Runtime allows remote attackers to execute arbitrary code via a crafted (1) document or (2) web page that triggers system-state corruption, aka "MSCOMCTL.OCX RCE Vulnerability."

Affected products

• Microsoft Commerce Server: version 2002 only; version 2007 only; version 2009 only
• Microsoft Host Integration Server: version 2004 only
• Microsoft Office: version 2003 only; version 2007 only; version 2010 only
• Microsoft Office Web Components: version 2003 only
• Microsoft SQL Server: version 2000 only; version 2005 only; version 2008 only
• Microsoft Visual Basic: version 6.0 only
• Microsoft Visual Foxpro: version 8.0 only; version 9.0 only

Published 2012-08-15. Last modified 2026-06-16.