{"id":"CVE-2009-0556","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-0556","generatedAt":"2026-10-31T23:41:51.503Z","title":"Microsoft Office PowerPoint Code Injection Vulnerability","description":"Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3, and PowerPoint in Microsoft Office 2004 for Mac, allows remote attackers to execute arbitrary code via a PowerPoint file with an OutlineTextRefAtom containing an an invalid index value that triggers memory corruption, as exploited in the wild in April 2009 by Exploit:Win32/Apptom.gen, aka \"Memory Corruption Vulnerability.\"","published":"2009-04-03T18:30:01.000Z","lastModified":"2026-06-16T23:05:18.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-94"],"affected":["microsoft/office powerpoint","microsoft/powerpoint"],"epss":{"score":0.67312,"percentile":0.99303,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2026-01-07","dueDate":"2026-01-28","knownRansomwareCampaignUse":"Unknown","notes":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.\nhttps://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0556"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 28 January 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspx","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspx","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://osvdb.org/53182","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://secunia.com/advisories/34572","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.kb.cert.org/vuls/id/627331","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.microsoft.com/technet/security/advisory/969136.mspx","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/archive/1/503453/100/0/threaded","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/34351","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id?1021967","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-132A.html","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.vupen.com/english/advisories/2009/0915","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.vupen.com/english/advisories/2009/1290","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://www.zerodayinitiative.com/advisories/ZDI-09-019","tags":["Third Party Advisory"],"source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017","tags":["Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/49632","tags":["Third Party Advisory"],"source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6204","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspx","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspx","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://osvdb.org/53182","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/34572","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/627331","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.microsoft.com/technet/security/advisory/969136.mspx","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/503453/100/0/threaded","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/34351","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1021967","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-132A.html","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/0915","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/1290","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.zerodayinitiative.com/advisories/ZDI-09-019","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/49632","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6204","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0556","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-0556","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."}