Code Injection in Microsoft PowerPoint (CVE‑2009‑0556) Enables Remote Code Execution
What It Is — PowerPoint contains a code‑injection flaw where a crafted OutlineTextRefAtom with an invalid index triggers memory corruption, allowing an attacker to execute arbitrary code when the file is opened.
Exploitability — Publicly disclosed; no known active exploit‑as‑a‑service, but the vulnerability is exploitable by simply opening a malicious PowerPoint file. CVSS v3 ≈ 7.5 (High).
Affected Products — Microsoft Office PowerPoint (all versions prior to the security update released in 2009).
Why It Matters for Trust & Control Assurance
- Tests the control objective of patch management and vulnerability remediation, a cornerstone of many frameworks (e.g., NIST CSF Identify & Protect).
- Demonstrates the need for continuous monitoring evidence that patches are applied and verified, providing a defensible audit trail.
- Shows how an unpatched application can undermine buyer confidence and the organization’s overall trust posture.
Recommended Actions
- Inventory every system that runs Microsoft Office PowerPoint.
- Apply Microsoft’s security update that resolves CVE‑2009‑0556.
- Validate remediation with a vulnerability scan and retain patch logs as audit evidence.
- Update your control documentation to reflect the remediation activity and map it to the relevant control objective.
Source: CISA KEV – CVE‑2009‑0556