CVE-2009-0556 — Microsoft Office PowerPoint Code Injection Vulnerability
CVE-2009-0556: Microsoft Office PowerPoint Code Injection Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Office |
| Date added | 2026-01-07 |
| Due date | 2026-01-28 |
| Ransomware campaign use | Unknown |
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 (CISA)
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
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-0556
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog