CVE DATABASE / CVE-2009-0238

CVE-2009-0238

Microsoft Office Remote Code Execution

⚠ CISA KEV — ACTIVELY EXPLOITED

On the CISA KEV catalog

Confirmed exploited in the wild. Added 2026-04-14. Federal remediation due 2026-04-28.
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.

Summary

Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially crafted Excel file that includes a malformed object.

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Data: NIST NVD + CISA KEV. Always verify against the vendor advisory before acting.