CVE-2009-0556: The 2009 PowerPoint But that Refuses to Die
ID: ba8438d5-0ffb-591b-852b-b4f7b86a5435
STIX ID: report--ba8438d5-0ffb-591b-852b-b4f7b86a5435
Feed Name: LevelBlue SpiderLabs Blog
Threat Score
This report revisits CVE-2009-0556 — a remote code execution flaw in legacy PowerPoint versions — detailing its original discovery, historical mitigation, and renewed relevance after being added to CISA's KEV catalog in January 2026; it stresses that legacy systems and poor patch hygiene keep old vulnerabilities exploitable and recommends isolation, segmentation, and compensating controls when patching is infeasible.
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