CVE-2009-0238 (GCVE-0-2009-0238)
Vulnerability from cvelistv5 – Published: 2009-02-25 16:00 – Updated: 2026-04-15 03:58
VLAI?
CISA KEV
Summary
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.
Severity ?
8.8 (High)
CWE
- n/a
Assigner
References
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Date Public ?
2009-02-24 00:00
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: defc1339-959e-42cc-98bb-9e2a5e3e11b5
Exploited: Yes
Timestamps
First Seen: 2026-04-14
Asserted: 2026-04-14
Scope
Notes: KEV entry: Microsoft Office Remote Code Execution | Affected: Microsoft / Office | Description: 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: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-04-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0238
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-94 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Office |
| Due Date | 2026-04-28 |
| Date Added | 2026-04-14 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Office Remote Code Execution |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-04-14 18:00 UTC
| Updated: 2026-04-14 18:00 UTC
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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