HIGH KEV
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."
Published Apr 3, 2009 ·Due Jan 28, 2026
8.8
HIGHCVSS 3.1
EPSS 67.31%
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."
Affected products
No data.
OR
- 2004
- 2000
- 2002
- 2003
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
8.8 HIGH CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
9.3 HIGH NVD
AV:N/AC:M/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
Listed in CISA KEV KEV
Date Added
Jan 7, 2026
Patch Due
Jan 28, 2026
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.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Jan 7, 2026 · SSVC 2.0.3
67.31% 0.67312
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.67312
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (36 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 67.31% (0.67312) | 99.29th | v5 (v2026.06.15) |
| Jun 15, 2026 | 67.54% (0.67539) | 99.22th | v5 (v2026.06.15) |
| Jun 8, 2026 | 59.05% (0.59046) | 98.27th | v4 (v2025.03.14) |
| Jun 6, 2026 | 57.40% (0.57396) | 98.19th | v4 (v2025.03.14) |
| Jun 5, 2026 | 60.38% (0.60383) | 98.31th | v4 (v2025.03.14) |
| Apr 23, 2026 | 67.88% (0.67884) | 98.60th | v4 (v2025.03.14) |
| Mar 21, 2026 | 76.45% (0.76447) | 98.92th | v4 (v2025.03.14) |
| Feb 18, 2026 | 78.21% (0.78206) | 98.99th | v4 (v2025.03.14) |
| Jan 31, 2026 | 76.76% (0.76763) | 98.91th | v4 (v2025.03.14) |
| Jan 15, 2026 | 78.49% (0.78494) | 98.99th | v4 (v2025.03.14) |
| Jan 8, 2026 | 76.76% (0.76763) | 98.90th | v4 (v2025.03.14) |
| Oct 20, 2025 | 47.55% (0.47548) | 97.54th | v4 (v2025.03.14) |
| Aug 27, 2025 | 49.59% (0.49586) | 97.72th | v4 (v2025.03.14) |
| Jun 20, 2025 | 45.79% (0.45791) | 97.47th | v4 (v2025.03.14) |
| Mar 30, 2025 | 52.30% (0.52299) | 97.70th | v4 (v2025.03.14) |
| Mar 29, 2025 | 50.58% (0.50580) | 96.85th | v4 (v2025.03.14) |
| Mar 17, 2025 | 52.30% (0.52299) | 97.67th | v4 (v2025.03.14) |
| Mar 4, 2025 | 94.58% (0.94579) | 99.45th | v3 (v2023.03.01) |
| Nov 17, 2024 | 93.47% (0.93473) | 99.19th | v3 (v2023.03.01) |
| Oct 12, 2024 | 92.06% (0.92062) | 99.02th | v3 (v2023.03.01) |
| Sep 6, 2024 | 93.22% (0.93216) | 99.13th | v3 (v2023.03.01) |
| Jun 27, 2024 | 94.34% (0.94342) | 99.22th | v3 (v2023.03.01) |
| Apr 16, 2024 | 95.00% (0.95005) | 99.27th | v3 (v2023.03.01) |
| Mar 10, 2024 | 95.53% (0.95526) | 99.33th | v3 (v2023.03.01) |
| Oct 2, 2023 | 96.38% (0.96378) | 99.39th | v3 (v2023.03.01) |
| Aug 21, 2023 | 96.53% (0.96528) | 99.41th | v3 (v2023.03.01) |
| May 22, 2023 | 96.68% (0.96684) | 99.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.01% (0.97011) | 99.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 46.72% (0.46718) | 98.56th | v2 (v2022.01.01) |
| Sep 4, 2022 | 46.72% (0.46718) | 98.44th | v2 (v2022.01.01) |
| Jul 18, 2022 | 49.76% (0.49756) | 98.61th | v2 (v2022.01.01) |
| Jul 17, 2022 | 9.92% (0.09915) | 94.34th | v2 (v2022.01.01) |
| Jul 4, 2022 | 49.76% (0.49756) | 98.59th | v2 (v2022.01.01) |
| May 2, 2022 | 55.10% (0.55095) | 98.66th | v2 (v2022.01.01) |
| Feb 26, 2022 | 57.79% (0.57789) | 98.53th | v2 (v2022.01.01) |
| Feb 4, 2022 | 60.01% (0.60013) | 98.62th | v2 (v2022.01.01) |
Weaknesses (1)
References (19)
- http://blogs.technet.com/mmpc/archive/2009/04/02/new-0-day-exploits-using-powerpoint-files.aspx x_refsource_CONFIRMVendor Advisory
- http://blogs.technet.com/msrc/archive/2009/04/02/microsoft-security-advisory-969136.aspx x_refsource_CONFIRMVendor Advisory
- http://blogs.technet.com/srd/archive/2009/04/02/investigating-the-new-powerpoint-issue.aspx x_refsource_CONFIRMVendor Advisory
- http://osvdb.org/53182 vdb-entryx_refsource_OSVDBBroken Link
- http://secunia.com/advisories/34572 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.kb.cert.org/vuls/id/627331 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.microsoft.com/technet/security/advisory/969136.mspx x_refsource_CONFIRMPatchVendor Advisory
- http://www.securityfocus.com/archive/1/503453/100/0/threaded mailing-listx_refsource_BUGTRAQBroken Link
- http://www.securityfocus.com/bid/34351 vdb-entryx_refsource_BIDBroken Link
- http://www.securitytracker.com/id?1021967 vdb-entryx_refsource_SECTRACKBroken Link
- http://www.us-cert.gov/cas/techalerts/TA09-132A.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2009/0915 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2009/1290 vdb-entryx_refsource_VUPENBroken Link
- http://www.zerodayinitiative.com/advisories/ZDI-09-019 x_refsource_MISCThird Party Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017 vendor-advisoryx_refsource_MSVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49632 vdb-entryx_refsource_XFThird Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6204 vdb-entrysignaturex_refsource_OVALBroken Link
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6279 vdb-entrysignaturex_refsource_OVALBroken Link
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0556 government-resourceUS Government Resource
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Apr 3, 2009
Updated Jan 8, 2026
Reserved Feb 12, 2009
Link CVE-2009-0556
CISA Vulnrichment
Updated Jan 7, 2026