CVE-2009-0238 (GCVE-0-2009-0238)
Vulnerability from cvelistv5 – Published: 2009-02-25 16:00 – Updated: 2026-04-15 03:58Summary
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)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-14 00:00 UTC
CWE
- n/a
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
12 references
| URL | Tags |
|---|---|
| http://www.microsoft.com/technet/security/advisor… | x_refsource_CONFIRM |
| http://www.vupen.com/english/advisories/2009/1023 | vdb-entryx_refsource_VUPEN |
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entryx_refsource_XF |
| http://www.us-cert.gov/cas/techalerts/TA09-104A.html | third-party-advisoryx_refsource_CERT |
| http://www.securityfocus.com/bid/33870 | vdb-entryx_refsource_BID |
| http://www.symantec.com/business/security_respons… | x_refsource_MISC |
| https://docs.microsoft.com/en-us/security-updates… | vendor-advisoryx_refsource_MS |
| https://oval.cisecurity.org/repository/search/def… | vdb-entrysignaturex_refsource_OVAL |
| http://isc.sans.org/diary.html?storyid=5923 | x_refsource_MISC |
| http://securitytracker.com/id?1021744 | vdb-entryx_refsource_SECTRACK |
| http://blogs.zdnet.com/security/?p=2658 | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2009-02-24 00:00
CISA
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
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3c2ee2ce-277a-48cf-9b46-26086938845a
Exploited: Yes
Timestamps
First Seen: 2009-02-25
Asserted: 2009-02-25
Scope
Notes: KEVIntel entry: Microsoft Office Excel 2000 SP3, 2002 SP3, 2003 SP3, and 2007 SP1; Excel Viewer 2003 Gold and SP3; Excel Viewer; Compatibility Pack for Word,... | Affected: Microsoft / Office Excel | CVSS: 8.8 (HIGH) | EPSS: 0.43063 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Microsoft Office Excel 2000 SP3, 2002 SP3, 2003 SP3, and 2007 SP1; Excel Viewer 2003 Gold and SP3; Excel Viewer; Compatibility Pack for Word,... |
| Vendor | Microsoft |
| Product | Office Excel |
| Added Date | 2009-02-25T16:00:00.000Z |
| Cvss Score | 8.8 |
| Epss Score | 0.43063 |
| Cvss Severity | HIGH |
| Epss Percentile | 0.98554 |
| Used In Malware | unknown |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 11:13 UTC
| Updated: 2026-06-23 11:13 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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