CVE-2009-0557

Microsoft Office Object Record Corruption

7.8 HIGHActively exploited (CISA KEV)EPSS 53.0%

Published10 Jun 2009
Added to CISA KEV8 Jun 2022
Remediation due22 Jun 2022

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."

CVSS 3.1 breakdown

Attack vectorLocal

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Microsoft Office2000 · 2003 · 2004 · 2007

Microsoft Office Compatibility Pack2007

Microsoft Office Excel Viewer2003

Microsoft Office SharePoint Server2007

Microsoft Open Xml File Format Converterall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021

References

http://osvdb.org/54953Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021PatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5564Broken Link
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0557US Government Resource
http://www.securityfocus.com/bid/35241Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id?1022351Broken LinkThird Party AdvisoryVDB Entry
http://www.us-cert.gov/cas/techalerts/TA09-160A.htmlBroken LinkThird Party AdvisoryUS Government Resource
http://www.vupen.com/english/advisories/2009/1540Broken Link

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2009-0557 being actively exploited?

Yes. CVE-2009-0557 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Jun 2022.

How severe is CVE-2009-0557?

CVE-2009-0557 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 53.0% probability of exploitation.

Which products are affected by CVE-2009-0557?

Affected products include Microsoft Office, Microsoft Office Compatibility Pack, Microsoft Office Excel Viewer, Microsoft Office SharePoint Server, Microsoft Open Xml File Format Converter.

How do I fix CVE-2009-0557?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2009-0557 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation works Book a demo

Running Microsoft 365?

Patching is one half. Scan your domain and check MFA, legacy authentication, admin roles and mail forwarding in two minutes, with a fix for every gap.

Run the free Microsoft 365 check

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.