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CVE-2009-0238 — Actively Exploited: Office (Microsoft)

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.

CVE IDCVE-2009-0238
VendorMicrosoft
ProductOffice
Vulnerability nameMicrosoft Office Remote Code Execution
Date added2026-04-14
Remediation due2026-04-28
Known ransomware useUnknown
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.
DescriptionMicrosoft 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.
SourceCISA Known Exploited Vulnerabilities

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