CVE-2009-0556
High 8.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Office PowerPoint Code Injection Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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."
Metrics
- CVSS 3.1
-
8.8 (HIGH)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 67% (percentile: 99) as of 1 November 2026
- CWE
- CWE-94
Affected products
microsoft: office powerpoint; microsoft: powerpoint
References
- http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-power… Vendor Advisory
- http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-96… Vendor Advisory
- http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoin… Vendor Advisory
- http://secunia.com/advisories/34572 Vendor Advisory
- http://www.microsoft.com/technet/security/advisory/969136.mspx PatchVendor Advisory
- http://www.vupen.com/english/advisories/2009/0915 Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-0… Vendor Advisory
- http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-power… Vendor Advisory
- http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-96… Vendor Advisory
- http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoin… Vendor Advisory