Microsoft Office PowerPoint Code Injection Vulnerability

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• NewsExploited · CISA KEVMicrosoft · Office

  Microsoft Office PowerPoint Code Injection Vulnerability

  CVE-2009-0556

  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.

  CISA's required action · due 28 Jan 2026 for U.S. federal civilian agencies

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

  Cited by CISA: learn.microsoft.com · nvd.nist.gov

  Added to KEV 7 Jan 2026 · Source checked 4 Nov 2026, 16:40 UTC · CISA KEV entry

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