CVE-2009-0563

Microsoft Office Buffer Overflow

7.8 HIGHActively exploited (CISA KEV)EPSS 62.8%

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

Description

Stack-based buffer overflow in Microsoft Office Word 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Microsoft Office for Mac 2004 and 2008; Open XML File Format Converter for Mac; Microsoft Office Word Viewer 2003 SP3; Microsoft Office Word Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a Word document with a crafted tag containing an invalid length field, aka "Word Buffer Overflow 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 Word Viewer2003

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/ms09-027

References

http://osvdb.org/54959Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-027PatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6133Broken Link
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0563US Government Resource
http://www.securityfocus.com/archive/1/504204/100/0/threadedBroken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/35188Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id?1022356Broken 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/2009/1546Broken Link
http://www.zerodayinitiative.com/advisories/ZDI-09-035Third Party AdvisoryVDB Entry

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2009-0563 being actively exploited?

Yes. CVE-2009-0563 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Jun 2022.

How severe is CVE-2009-0563?

CVE-2009-0563 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 62.8% probability of exploitation.

Which products are affected by CVE-2009-0563?

Affected products include Microsoft Office, Microsoft Office Compatibility Pack, Microsoft Office Word Viewer, Microsoft Open Xml File Format Converter.

How do I fix CVE-2009-0563?

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-2009-0563 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.