# CVE-2009-0556: Microsoft Office PowerPoint Code Injection Vulnerability

> CVE-2009-0556: Microsoft Office PowerPoint Code Injection Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2009-0556
Last updated: 2026-01-08T04:55:23Z

- Published: 2009-04-03 18:00 UTC · Updated: 2026-01-08 04:55 UTC · Assigner: microsoft
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 67.3%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-01-07, federal due date 2026-01-28, ransomware use: Unknown

## 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."

## CISA 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.

## Affected vendors and products

- Microsoft: Office

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2009-0556)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2009-0556)
- [http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspx](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/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://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx)
- [http://osvdb.org/53182](http://osvdb.org/53182)
- [https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017)
- [http://secunia.com/advisories/34572](http://secunia.com/advisories/34572)
- [https://exchange.xforce.ibmcloud.com/vulnerabilities/49632](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%253Aorg.mitre.oval%253Adef%253A6204)
- [https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279](https://oval.cisecurity.org/repository/search/definition/oval%253Aorg.mitre.oval%253Adef%253A6279)
- [http://www.kb.cert.org/vuls/id/627331](http://www.kb.cert.org/vuls/id/627331)
- [http://www.microsoft.com/technet/security/advisory/969136.mspx](http://www.microsoft.com/technet/security/advisory/969136.mspx)
- [http://www.securityfocus.com/archive/1/503453/100/0/threaded](http://www.securityfocus.com/archive/1/503453/100/0/threaded)
- [http://www.securityfocus.com/bid/34351](http://www.securityfocus.com/bid/34351)
- [http://www.securitytracker.com/id?1021967](http://www.securitytracker.com/id?1021967)
- [http://www.us-cert.gov/cas/techalerts/TA09-132A.html](http://www.us-cert.gov/cas/techalerts/TA09-132A.html)
- [http://www.vupen.com/english/advisories/2009/0915](http://www.vupen.com/english/advisories/2009/0915)
- [http://www.vupen.com/english/advisories/2009/1290](http://www.vupen.com/english/advisories/2009/1290)
- [http://www.zerodayinitiative.com/advisories/ZDI-09-019](http://www.zerodayinitiative.com/advisories/ZDI-09-019)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2009-0556 · Markdown: https://rewindex.com/cve/CVE-2009-0556.md · JSON: https://rewindex.com/api/v1/cves/CVE-2009-0556 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:47:40.082Z