# CVE-2009-0557: Microsoft Office Object Record Corruption Vulnerability

> CVE-2009-0557: Microsoft Office Object Record Corruption Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2009-0557
Last updated: 2025-10-22T00:05:54Z

- Published: 2009-06-10 18:00 UTC · Updated: 2025-10-22 00:05 UTC · Assigner: microsoft
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 52.8%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-06-08, federal due date 2022-06-22, ransomware use: Unknown

## Description

Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3, and Office 2004 and 2008 for Mac; Excel in 2007 Microsoft Office System SP1 and SP2; Open XML File Format Converter for Mac; Microsoft Office Excel Viewer 2003 SP3; Microsoft Office Excel Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allow remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "Object Record Corruption Vulnerability."

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Microsoft: Office

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2009-0557)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2009-0557)
- [http://osvdb.org/54953](http://osvdb.org/54953)
- [https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021)
- [https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5564](https://oval.cisecurity.org/repository/search/definition/oval%253Aorg.mitre.oval%253Adef%253A5564)
- [http://www.securityfocus.com/bid/35241](http://www.securityfocus.com/bid/35241)
- [http://www.securitytracker.com/id?1022351](http://www.securitytracker.com/id?1022351)
- [http://www.us-cert.gov/cas/techalerts/TA09-160A.html](http://www.us-cert.gov/cas/techalerts/TA09-160A.html)
- [http://www.vupen.com/english/advisories/2009/1540](http://www.vupen.com/english/advisories/2009/1540)

---

_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/)_


---
Canonical: https://rewindex.com/cve/CVE-2009-0557 · Markdown: https://rewindex.com/cve/CVE-2009-0557.md · JSON: https://rewindex.com/api/v1/cves/CVE-2009-0557 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:47:37.638Z