--- title: "CVE-2009-3129: Out-of-bounds Write | CubePath" description: "Microsoft Office Excel 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Office Excel…" language: en source: https://cubepath.com/security/cve/CVE-2009-3129 --- # CVE-2009-3129: Out-of-bounds Write | CubePath ## Description Microsoft Office Excel 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Office Excel Viewer 2003 SP3; Office Excel Viewer SP1 and SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a spreadsheet with a FEATHEADER record containing an invalid cbHdrData size element that affects a pointer offset, aka "Excel Featheader Record Memory Corruption Vulnerability." Official description from the CVE record, published by microsoft. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2009-3129) ## Key data ### CVSS 3.1 High 7.8 Score published by CISA-ADP in the CVE record. CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | Metric | Value | What it means | | ---------------------- | --------- | ----------------------------------------------------------------------------------------- | | Attack vector | Local | The attacker needs local access to the system, or to trick a user into running something. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | None | No account or privileges are needed. | | User interaction | Required | A user has to do something first, such as opening a file or following a link. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | High | Serious or total effect on the trustworthiness of data. | | Availability impact | High | Serious or total effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.84034 (84.0% probability) Percentile 99.7% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Microsoft Excel Featheader Record Memory Corruption Vulnerability Added to the catalog Mar 3, 2022 Federal due date Mar 24, 2022 ### CISA assessment as of Feb 10, 2025 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-787](https://cwe.mitre.org/data/definitions/787.html) Out-of-bounds Write ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [59860](http://osvdb.org/59860) (osvdb.org) vdb-entry - [oval:org.mitre.oval:def:6521](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6521) (oval.cisecurity.org) vdb-entry signature - [1023157](http://www.securitytracker.com/id?1023157) (securitytracker.com) vdb-entry - [36945](http://www.securityfocus.com/bid/36945) (securityfocus.com) vdb-entry - [TA09-314A](http://www.us-cert.gov/cas/techalerts/TA09-314A.html) (us-cert.gov) third-party-advisory - [20091110 Microsoft Excel FEATHEADER Record Memory Corruption Vulnerability](http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=832) (labs.idefense.com) third-party-advisory - [MS09-067](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-067) (docs.microsoft.com) vendor-advisory - [20091110 ZDI-09-083: Microsoft Excel Shared Feature Header Pointer Offset Memory Corruption Vulnerability](http://archives.neohapsis.com/archives/bugtraq/2009-11/0080.html) (archives.neohapsis.com) mailing-list - [zerodayinitiative.com/advisories/ZDI-09-083](http://www.zerodayinitiative.com/advisories/ZDI-09-083) - [14706](http://www.exploit-db.com/exploits/14706) (exploit-db.com) exploit ## Timeline 1. ID reserved Sep 10, 2009 2. Record published Nov 11, 2009 3. Added to CISA KEV Mar 3, 2022 4. Record last updated Oct 22, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:32 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)