CVE-2011-1990

critical Microsoft
CVSS v3 Base Score
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS Score
63.5%
Exploitation probability in 30 days
Top 2% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
M
Confidentiality
C
Integrity
C
Availability
C
Published: September 15, 2011 (5355 days ago)
Last Modified: April 29, 2026
Vendor: Microsoft
Source: NVD

Description

Microsoft Excel 2007 SP2; Excel in Office 2007 SP2; Excel Viewer SP2; Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2; and Excel Services on Office SharePoint Server 2007 SP2 do not properly validate the sign of an unspecified array index, which allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel Out of Bounds Array Indexing Vulnerability."

CWE

CWE-119

Affected Products

microsoft excelmicrosoft excel viewermicrosoft officemicrosoft office compatibility packmicrosoft sharepoint server

References

🔗 www.us-cert.gov 🔗 docs.microsoft.com 🔗 oval.cisecurity.org 🔗 www.us-cert.gov 🔗 docs.microsoft.com