CVE-2009-3129Microsoft 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; a…
Updated under an hour ago ()
Does this affect you?
It affects microsoft excel and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 3, 2022; federal agencies had to remediate by Mar 24, 2022. Treat that date as your deadline.
Do this next
Free account, 1 product
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."
- CVSS
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Added to CISA KEV Mar 3, 2022; federal remediation due Mar 24, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 84.03% (percentile 100)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 22, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft excel microsoft:excel | 2002; 2003; 2007; 2007 | NVD |
microsoft excel_viewer microsoft:excel_viewer | all versions; all versions; 2003 | NVD |
microsoft office microsoft:office | 2004; 2008 | NVD |
microsoft open_xml_file_format_converter microsoft:open_xml_file_format_converter | all versions | NVD |
References
- http://osvdb.org/59860vdb-entry, x-refsource-osvdb, broken-link
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6521vdb-entry, signature, x-refsource-oval, broken-link
- http://www.securitytracker.com/id?1023157vdb-entry, x-refsource-sectrack, broken-link, third-party-advisory
- http://www.securityfocus.com/bid/36945vdb-entry, x-refsource-bid, broken-link, third-party-advisory
- http://www.us-cert.gov/cas/techalerts/TA09-314A.htmlthird-party-advisory, x-refsource-cert, us-government-resource
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=832third-party-advisory, x-refsource-idefense, broken-link
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-067vendor-advisory, x-refsource-ms, patch
- http://archives.neohapsis.com/archives/bugtraq/2009-11/0080.htmlmailing-list, x-refsource-bugtraq, broken-link
- http://www.zerodayinitiative.com/advisories/ZDI-09-083x-refsource-misc, third-party-advisory, vdb-entry
- http://www.exploit-db.com/exploits/14706exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-3129us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.