{"cve":{"cve_id":"CVE-2009-0556","is_kev":true,"kev_date_added":"2026-01-07","kev_vendor_project":"Microsoft","kev_product":"Office","kev_vulnerability_name":"Microsoft Office PowerPoint Code Injection Vulnerability","kev_short_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.","kev_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.","kev_due_date":"2026-01-28","kev_known_ransomware":false,"kev_notes":"https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-017 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0556","kev_cwes":["CWE-94"],"epss_score":0.67539,"epss_percentile":0.99216,"epss_as_of":"2026-06-23","description":"Microsoft Office PowerPoint 2000 SP3, 2002 SP3, and 2003 SP3, and PowerPoint in Microsoft Office 2004 for Mac, allows remote attackers to execute arbitrary code via a PowerPoint file with an OutlineTextRefAtom containing an an invalid index value that triggers memory corruption, as exploited in the wild in April 2009 by Exploit:Win32/Apptom.gen, aka \"Memory Corruption 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