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[ CVE-2009-0563 · Published 10 Jun 2009 ]

Microsoft Office Buffer Overflow Vulnerability

Exploited · CISA KEV CVSS 7.8 EPSS 60%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-06-08
  • EPSS: 60% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official 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."

CISA: Microsoft Office contains a buffer overflow vulnerability that allows remote attackers to execute code via a Word document with a crafted tag containing an invalid length field.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 22 Jun 2022): Apply updates per vendor instructions.

[ References ]References