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Vulnerability record · CVE-2009-2493 · published 29 July 2009

CVE-2009-2493: Microsoft visual c\+\+ permissions and access controls vulnerability

Microsoft · Visual C\+\+

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."

8.8 CVSS 3.1 High EPSS 38% · top 1.5% CWE-264 · Permissions and access controlsCWE-94 · Code injection
8.8CVSS 3.1 base score, v2 9.3
38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
72References
16 Jun 2026Last modified by NVD

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."

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2009-2493), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.