CVE-2009-0556
HIGHCISA KEVEPSS 99th pctlDescription
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."
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 99% of all known CVEs.
Remediation due: 2026-01-28
References
- http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspx
- http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspx
- http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx
- http://osvdb.org/53182
- http://secunia.com/advisories/34572
- http://www.kb.cert.org/vuls/id/627331
- http://www.microsoft.com/technet/security/advisory/969136.mspx
- http://www.securityfocus.com/archive/1/503453/100/0/threaded
- http://www.securityfocus.com/bid/34351
- http://www.securitytracker.com/id?1021967
- http://www.us-cert.gov/cas/techalerts/TA09-132A.html
- http://www.vupen.com/english/advisories/2009/0915
- http://www.vupen.com/english/advisories/2009/1290
- http://www.zerodayinitiative.com/advisories/ZDI-09-019
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49632
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6204
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0556
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.