CVE-2015-2423: Microsoft Excel

Medium severity, CVSS 4.3. EPSS: 19.9% chance of exploitation in the next 30 days.

Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, Windows 10, Excel 2007 SP3, PowerPoint 2007 SP3, Visio 2007 SP3, Word 2007 SP3, Office 2010 SP2, Excel 2010 SP2, PowerPoint 2010 SP2, Visio 2010 SP2, Word 2010 SP2, Excel 2013 SP1, PowerPoint 2013 SP1, Visio 2013 SP1, Word 2013 SP1, Excel 2013 RT SP1, PowerPoint 2013 RT SP1, Visio 2013 RT SP1, Word 2013 RT SP1, and Internet Explorer 7 through 11 allow remote attackers to gain privileges and obtain sensitive information via a crafted command-line parameter to an Office application or Notepad, as demonstrated by a transition from Low Integrity to Medium Integrity, aka "Unsafe Command Line Parameter Passing Vulnerability."

Affected products

Microsoft Excel: version 2007 only; version 2010 only; version 2013 only
Microsoft Internet Explorer: version 7 only; version 8 only; version 9 only; version 10 only; version 11 only
Microsoft Office: version 2010 only
Microsoft PowerPoint: version 2007 only; version 2010 only; version 2013 only
Microsoft Visio: version 2007 only; version 2010 only; version 2013 only; version 2016 only
Microsoft Windows 10: affected versions not specified
Microsoft Windows 7: affected versions not specified
Microsoft Windows 8: affected versions not specified
Microsoft Windows 8.1: affected versions not specified
Microsoft Windows Rt: affected versions not specified
Microsoft Windows Rt 8.1: affected versions not specified
Microsoft Windows Server 2008: affected versions not specified; version r2 only
Microsoft Windows Server 2012: affected versions not specified; version r2 only
Microsoft Windows Vista: affected versions not specified
Microsoft Word: version 2007 only; version 2010 only; version 2013 only; version 2016 only

Published 2015-08-15. Last modified 2026-06-17.