CVE-2009-0563: Microsoft Office Buffer Overflow Vulnerability

Vulnerability summary

CVE-2009-0563 is a high (CVSS 9.3) Out-of-bounds Write vulnerability in Microsoft Office. It is known to be exploited: CISA lists it, first on 08-06-2022. EPSS estimates a 62.83% chance of exploitation in the next 30 days, higher than 99.1% of scored vulnerabilities.

Timeline

1. 10-06-2009
   PublishedVulnerability first disclosed.
2. 08-06-2022
   Added to CISA KEVMicrosoft Office Buffer Overflow Vulnerability
3. 22-06-2022
   CISA remediation dueApply updates per vendor instructions.
4. 22-10-2025
   Last modifiedVulnerability information updated.

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."

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.