Improper input validation in Microsoft Excel
CVE-2011-1989
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."
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 9.3 (High). Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.278 (98.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.211 · newest: 0.278 · change: +0.066
Affected products
- Microsoft Excel — versions 2003, 2007, 2010
- Microsoft Excel Viewer
- Microsoft Excel Web App — versions 2010
- Microsoft Office — versions 2004, 2007, 2008
- Microsoft Office Compatibility Pack — versions 2007
- Microsoft Open XML File Format Converter
- Microsoft Sharepoint Server — versions 2007, 2010
Weakness classification (CWE)
References
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:12974 (signature, vdb-entry)
- docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-072 (vendor-advisory)
- www.us-cert.gov/cas/techalerts/TA11-256A.html (US Government Resource, third-party-advisory)