# CVE-2009-2493

## Summary

- **CVE ID:** CVE-2009-2493
- **Severity:** HIGH
- **CVSS Score:** 9.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Jul 29, 2009
- **Last Modified:** May 27, 2026

## Description

The Active Template Library (ATL) in Microsoft Visual Studio .NET 2003 SP1, Visual Studio 2005 SP1 and 2008 Gold and SP1, and Visual C++ 2005 SP1 and 2008 Gold and SP1; and Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2; does not properly restrict use of OleLoadFromStream in instantiating objects from data streams, which allows remote attackers to execute arbitrary code via a crafted HTML document with an ATL (1) component or (2) control, related to ATL headers and bypassing security policies, aka "ATL COM Initialization Vulnerability."

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.adobe.com/support/security/bulletins/apsb09-11.html)
- [CNA](http://sunsolve.sun.com/search/document.do?assetkey=1-66-266108-1)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6304)
- [CNA](http://www.vupen.com/english/advisories/2009/2034)
- [CNA](http://www.us-cert.gov/cas/techalerts/TA09-223A.html)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6621)
- [CNA](http://www.openoffice.org/security/cves/CVE-2009-2493.html)
- [CNA](http://www.adobe.com/support/security/bulletins/apsb09-13.html)
- [CNA](http://www.novell.com/support/viewContent.do?externalId=7004997&sliceId=1)
- [CNA](http://www.us-cert.gov/cas/techalerts/TA09-286A.html)
- [CNA](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-035)
- [CNA](http://blogs.technet.com/srd/archive/2009/08/11/ms09-037-why-we-are-using-cve-s-already-used-in-ms09-035.aspx)
- [CNA](http://www.vupen.com/english/advisories/2010/0366)
- [CNA](http://marc.info/?l=bugtraq&m=126592505426855&w=2)
- [CNA](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-072)
- [CNA](http://secunia.com/advisories/36187)
- [CNA](http://www.us-cert.gov/cas/techalerts/TA09-342A.html)
- [CNA](http://www.vupen.com/english/advisories/2009/2232)
- [CNA](http://www.adobe.com/support/security/bulletins/apsb09-10.html)
- [CNA](http://secunia.com/advisories/36374)
- [CNA](http://secunia.com/advisories/38568)
- [CNA](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-037)
- [CNA](http://www.adobe.com/support/security/advisories/apsa09-04.html)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6245)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6716)
- [CNA](http://secunia.com/advisories/36746)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6421)
- [CNA](http://secunia.com/advisories/41818)
- [CNA](http://secunia.com/advisories/35967)
- [CNA](http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00002.html)
- [CNA](http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020775.1-1)
- [CNA](http://www.us-cert.gov/cas/techalerts/TA09-195A.html)
- [CNA](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-060)
- [CNA](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-055)
- [CNA](http://sunsolve.sun.com/search/document.do?assetkey=1-66-264648-1)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6473)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 42.13%
- **EPSS Percentile:** 97.4

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._