CVE-2009-0556 KEV
8.8
HIGH · CVSS 3.1 · EPSS 67.3% (pctl 99)
Patch first
On CISA KEV — known exploited in the wild, due 2026-01-28.
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."
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 67.31% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-94 |
| On CISA KEV | yes — remediate by 2026-01-28 |
| Public exploit | none known |
| Published | 2009-04-03 |
| Last modified | 2026-06-16 |
CISA KEV
| Name | Microsoft Office PowerPoint Code Injection Vulnerability |
|---|---|
| Added | 2026-01-07 |
| Due | 2026-01-28 |
| Vendor / product | Microsoft / Office |
| Ransomware use | none reported |
Affected (2)
| Vendor | Product |
|---|---|
| microsoft | office powerpoint |
| microsoft | powerpoint |
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
- 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
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