{"id":"CVE-2011-0097","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-0097","generatedAt":"2026-10-28T02:17:45.839Z","title":"Integer underflow in Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2, and 2010; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2…","description":"Integer underflow in Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2, and 2010; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 allows remote attackers to execute arbitrary code via a crafted 400h substream in an Excel file, which triggers a stack-based buffer overflow, aka \"Excel Integer Overrun Vulnerability.\"","published":"2011-04-13T18:55:01.000Z","lastModified":"2026-06-16T23:26:48.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"2.0","score":9.3,"severity":"HIGH","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C"},"cwe":["CWE-189"],"affected":["microsoft/excel","microsoft/excel viewer","microsoft/office","microsoft/office compatibility pack","microsoft/open xml file format converter"],"epss":{"score":0.31553,"percentile":0.98274,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.31553,"percentile":0.98228}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 31.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://osvdb.org/71758","source":"secure@microsoft.com"},{"url":"http://secunia.com/advisories/39122","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://secunia.com/secunia_research/2011-31","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/47201","source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id?1025337","source":"secure@microsoft.com"},{"url":"http://www.us-cert.gov/cas/techalerts/TA11-102A.html","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.vupen.com/english/advisories/2011/0940","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-021","source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12612","source":"secure@microsoft.com"},{"url":"http://osvdb.org/71758","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/39122","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/secunia_research/2011-31","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/47201","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1025337","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA11-102A.html","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/0940","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-021","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12612","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-0097","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}