CVEvulnerability

CVE-2009-0238

8.8 HIGH Known exploited Published 2009-02-25 Modified 2026-06-16 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Office Remote Code Execution — Microsoft Office

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.

Added to KEV: 2026-04-14
Remediation due: 2026-04-28
Ransomware use: Unknown
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.
Notes: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0238

Status: Analyzed
Published: 2009-02-25
Last modified: 2026-06-16
Assigner: [email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected]): 9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Weaknesses: CWE-94

Description

Microsoft Office Excel 2000 SP3, 2002 SP3, 2003 SP3, and 2007 SP1; Excel Viewer 2003 Gold and SP3; Excel Viewer; Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1; and Excel in Microsoft Office 2004 and 2008 for Mac allow remote attackers to execute arbitrary code via a crafted Excel document that triggers an access attempt on an invalid object, as exploited in the wild in February 2009 by Trojan.Mdropper.AC.

Affected configurations

• microsoft excel 2000 • microsoft excel 2002 • microsoft excel 2003 • microsoft excel 2007 • microsoft excel viewer • microsoft office 2004 • microsoft office 2008 • microsoft office compatibility pack 2007 • microsoft office excel viewer • microsoft office excel viewer 2003

Weakness · CWE (1)

CWE-94 Improper Control of Generation of Code weakness

References