CVE-2009-0556
HIGH severity · CVSS 8.8 · Code injection · actively exploited (CISA KEV)
8.8CVSS HIGH exploited
Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2026-01-07. US federal agencies must patch by 2026-01-28.
Summary
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."
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)68%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Official patch: http://www.microsoft.com/technet/security/advisory/969136.mspx ↗
Additional information
- NVD record
- http://www.microsoft.com/technet/security/advisory/969136.mspxPatch
- http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspxAdvisory
- http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspxAdvisory
- http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspxAdvisory
- http://secunia.com/advisories/34572Advisory
- http://osvdb.org/53182
- http://www.kb.cert.org/vuls/id/627331
- http://www.securityfocus.com/archive/1/503453/100/0/threaded