CVE-2009-0556 (GCVE-0-2009-0556)
Vulnerability from cvelistv5 – Published: 2009-04-03 18:00 – Updated: 2026-01-08 04:55Summary
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."
Severity
8.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-07 00:00 UTC
CWE
- n/a
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
19 references
Date Public
2009-04-02 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 91c4c25d-32de-4ff2-8252-4be91d84baa8
Exploited: Yes
Timestamps
First Seen: 2026-01-07
Asserted: 2026-01-07
Scope
Notes: Microsoft Office PowerPoint Code Injection Vulnerability | Affected: Microsoft / Office | Description: Microsoft Office PowerPoint contains a code injection vulnerability that allows remote attackers to execute arbitrary code via a PowerPoint file with an OutlineTextRefAtom containing an invalid index value that triggers memory corruption. | 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. | Due date: 2026-01-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0556
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-94 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Office |
| Due Date | 2026-01-28 |
| Date Added | 2026-01-07 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Office PowerPoint Code Injection Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:09 CEST
| Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: c24ba040-63b6-4270-8898-8b229d934311
Exploited: Yes
Timestamps
First Seen: 2009-04-03
Asserted: 2009-04-03
Scope
Notes: Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3, and PowerPoint in Microsoft Office 2004 for Mac, allows remote attackers to execute... | Affected: Microsoft / Office PowerPoint | CVSS: 8.8 (HIGH) | EPSS: 0.67312 | Used in malware: unknown | Listed 6269 days ahead of CISA KEV | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3, and PowerPoint in Microsoft Office 2004 for Mac, allows remote attackers to execute... |
| Cve Id | CVE-2009-0556 |
| Vendor | Microsoft |
| Ghsa Id | None |
| Product | Office PowerPoint |
| Added Date | 2009-04-03T18:00:00.000Z |
| Cvss Score | 8.8 |
| Epss Score | 0.67312 |
| Previous Ids | |
| Cvss Severity | HIGH |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.99286 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2009-0556 |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:10 CEST
| Updated: 2026-10-02 09:10 CEST
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"url": "http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspx"
},
{
"name": "ADV-2009-1290",
"refsource": "VUPEN",
"url": "http://www.vupen.com/english/advisories/2009/1290"
},
{
"name": "53182",
"refsource": "OSVDB",
"url": "http://osvdb.org/53182"
},
{
"name": "MS09-017",
"refsource": "MS",
"url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017"
},
{
"name": "powerpoint-unspecified-code-execution(49632)",
"refsource": "XF",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49632"
},
{
"name": "34351",
"refsource": "BID",
"url": "http://www.securityfocus.com/bid/34351"
},
{
"name": "ADV-2009-0915",
"refsource": "VUPEN",
"url": "http://www.vupen.com/english/advisories/2009/0915"
},
{
"name": "http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspx",
"refsource": "CONFIRM",
"url": "http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspx"
},
{
"name": "http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx",
"refsource": "CONFIRM",
"url": "http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx"
},
{
"name": "oval:org.mitre.oval:def:6279",
"refsource": "OVAL",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279"
},
{
"name": "34572",
"refsource": "SECUNIA",
"url": "http://secunia.com/advisories/34572"
},
{
"name": "1021967",
"refsource": "SECTRACK",
"url": "http://www.securitytracker.com/id?1021967"
},
{
"name": "TA09-132A",
"refsource": "CERT",
"url": "http://www.us-cert.gov/cas/techalerts/TA09-132A.html"
},
{
"name": "http://www.microsoft.com/technet/security/advisory/969136.mspx",
"refsource": "CONFIRM",
"url": "http://www.microsoft.com/technet/security/advisory/969136.mspx"
},
{
"name": "VU#627331",
"refsource": "CERT-VN",
"url": "http://www.kb.cert.org/vuls/id/627331"
},
{
"name": "20090512 ZDI-09-019: Microsoft Office PowerPoint OutlineTextRefAtom Parsing Memory Corruption Vulnerability",
"refsource": "BUGTRAQ",
"url": "http://www.securityfocus.com/archive/1/503453/100/0/threaded"
},
{
"name": "oval:org.mitre.oval:def:6204",
"refsource": "OVAL",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6204"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2009-0556",
"datePublished": "2009-04-03T18:00:00.000Z",
"dateReserved": "2009-02-12T00:00:00.000Z",
"dateUpdated": "2026-01-08T04:55:23.788Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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