ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2009-0557

Microsoft Office Object Record Corruption Vulnerability

Published Jun 10, 2009 · catalog updated Jun 16, 2026 · Microsoft Office

Patch now

CVE-2009-0557 is in the CISA known-exploited catalog, due Jun 22, 2022. Confirm Microsoft Office against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
53.00%
Remediation
Remediation guidance
Affected products
cpe microsoft/office · cpe microsoft/office compatibility pack · vendor Microsoft Office · vendor n/a n/a

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."

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/office2000
  • cpe microsoft/office2003
  • cpe microsoft/office2004
  • cpe microsoft/office2007
  • cpe microsoft/office2008
  • cpe microsoft/officexp
  • cpe microsoft/office compatibility pack2007
  • vendor Microsoft Officeversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2009-0557

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2009-0557 is in the CISA known-exploited catalog, due Jun 22, 2022. Confirm Microsoft Office against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/office compatibility pack 2007. Apply updates per vendor instructions.

What should an analyst verify?

CWE-94: Code Injection. EPSS 53.00%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 10, 2009 · Catalog

    Detected

    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

  2. Jun 8, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jun 22, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Sources

  • CISA KEVConfirmed exploitationCVE-2009-0557

    Microsoft Office contains an object record corruption vulnerability that allows remote attackers to execute code via a crafted Excel file with a malformed record object.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2009-0557

    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 Of

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2009-0557

    30-day exploitation probability 53.0%

    first.org
  • NIST NVDVulnerability recordCVE-2009-0557

    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 Of

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2009-0557

    Microsoft Office contains an object record corruption vulnerability that allows remote attackers to execute code via a crafted Excel file with a malformed record object.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.