# CVE-2009-0563: Microsoft Office Buffer Overflow Vulnerability

Source: https://junglewise.ai/threats/cve-2009-0563-microsoft-office-buffer-overflow-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-06-08. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2009-0563 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-06-08

A stack-based buffer overflow vulnerability exists in multiple versions of Microsoft Office Word and related components. Remote attackers can execute arbitrary code by tricking a user into opening a specially crafted Word document containing a tag with an invalid length field.

Technologies: [Microsoft Office](https://junglewise.ai/threats/technologies/office). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2009-0563 exploited in the wild?** Yes. CVE-2009-0563 is known to be exploited in the wild, first recorded on 8 June 2022. Treat it as urgent.

**How severe is CVE-2009-0563?** Critical severity, with a CVSS score of 7.8, published 8 June 2022.

**Which products and versions are affected?** Microsoft Office Word 2002 SP3; Microsoft Office Word 2003 SP3; Microsoft Office Word 2007 SP1, SP2; Microsoft Office for Mac 2004; and 4 more.

**Is there a fix for CVE-2009-0563?** A patch was published on 2009-06-09: Microsoft Security Bulletin MS09-027 published. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2009-0563 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2009-0563?** Check whether you run Microsoft Office. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft Office Word 2002 SP3
- Microsoft Office Word 2003 SP3
- Microsoft Office Word 2007 SP1, SP2
- Microsoft Office for Mac 2004
- Microsoft Office for Mac 2008
- Microsoft Open XML File Format Converter for Mac
- Microsoft Office Word Viewer 2003 SP3
- Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1, SP2

## Timeline

- 2009-06-09: patched: Microsoft Security Bulletin MS09-027 published.
- 2022-06-08: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
- 2022-06-08: disclosed: NVD publication date.

## Related threats

- [Microsoft Office Outlook user warning spoofing vulnerability](https://junglewise.ai/threats/cve-2026-124194-microsoft-office-outlook-missing-user-interaction-for)
- [Microsoft Office heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-122198-heap-based-buffer-overflow-in-microsoft-office-allows-an)
- [Microsoft Office heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-120003-heap-based-buffer-overflow-in-microsoft-office-allows-an)
- [Microsoft Office UI security feature bypass](https://junglewise.ai/threats/cve-2026-119998-product-ui-does-not-warn-user-of-unsafe-actions-in-microsoft)
- [Microsoft Office heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-116717-heap-based-buffer-overflow-in-microsoft-office-allows-an)