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CVE-2009-0238: Microsoft Office Remote Code Execution
Microsoft Office · in CISA KEV since 2026-04-14
2026-04-14added to KEV
2026-04-28federal remediation due date
43.21%EPSS exploit probability (30 days) 98.7th percentile
8.8 HIGHCVSS 3.1
Unknownknown ransomware use
6,257days from NVD publication to KEV
What it is
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.
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.
| CWE | CWE-94 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD published | 2009-02-25 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2009-0238.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.