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CVE-2011-1989

Published: Sep 15, 2011Updated: Apr 29, 2026 Sources: CVE List NVDCWE-20
NVD MITRE
9.3CVSSCRITICAL
EPSS Score
27.8%
Top 2.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Microsoft Excel 2003 SP3 and 2007 SP2; Excel in Office 2007 SP2; Excel 2010 Gold and SP1; Excel in Office 2010 Gold and SP1; Office 2004, 2008, and 2011 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2; Excel Services on Office SharePoint Server 2007 SP2; Excel Services on Office SharePoint Server 2010 Gold and SP1; and Excel Web App 2010 Gold and SP1 do not properly parse conditional expressions associated with formatting requirements, which allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel Conditional Expression Parsing Vulnerability."

CVSS Vector Breakdown

AV:NAC:MAu:NC:CI:CA:C
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:CConfidentiality
Complete
I:CIntegrity
Complete
A:CAvailability
Complete
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

n/an/a
excelmicrosoft
Desktop App
Consumer Software / productivity
excel viewermicrosoft
LibraryLibrary
OSS Libraries / generic-library
excel web appmicrosoft
On-prem
Operating Systems / windows
officemicrosoft
Desktop App
Consumer Software / productivity
microsoftcommercialUSOperating Systems
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12974
oval.cisecurity.org
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-072
docs.microsoft.com
http://www.us-cert.gov/cas/techalerts/TA11-256A.html
us-cert.gov

Timeline

Published
Sep 15, 2011
Last Updated
Apr 29, 2026

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