CVE-2009-0556

Microsoft Office PowerPoint Code Injection Vulnerability

Microsoft — Office

Added to KEV catalog: 7 January 2026
Federal remediation due date: 28 January 2026
Weakness classification (CWE): CWE-94

CISA Description

Microsoft Office PowerPoint contains a code injection vulnerability that allows remote attackers to execute arbitrary code via a PowerPoint file with an OutlineTextRefAtom containing an invalid index value that triggers memory corruption.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0556

View on NVD View on MITRE CVE View full CISA catalog

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