All vulnerabilities
CVE-2009-0556

Microsoft Office PowerPoint Code Injection Vulnerability

Microsoft OfficeApplications & CMS
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationExploited in the wildAdded to KEV 7 Jan 2026CISA KEV
Exploit odds (EPSS)67.3%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline28 Jan 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 3 Apr 2009, 18:00 UTCPublishedCVE List
  2. 7 Jan 2026Added to CISA KEVCISA KEV

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.

Text from CVE List

Affected versions 1

  • n/aaffected: n/aCVE List

References 7