CVE-2009-2493Visual Studio Code Injection
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;…
Published Jul 29, 2009 · Updated May 27, 2026
Key Facts
Patch immediately- CVE-2009-2493 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Visual C\+\+ (Microsoft), Visual Studio (Microsoft), Windows 2000 (Microsoft) and 4 more products.
- It is exploited in the wild, listed in Industry KEV feed since Nov 4, 2009. No public exploit code is known.
- EPSS estimates a 38% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
38%
Higher than 98.5% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
56/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 4, 2009
98 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
- advisoryhttp://www.openoffice.org/security/cves/CVE-2009-2493.html
- advisorySUSE-SA:2009:053
- advisorySSRT100013
- advisoryhttp://www.adobe.com/support/security/bulletins/apsb09-10.html
- advisoryhttp://www.adobe.com/support/security/bulletins/apsb09-13.html
- advisoryhttp://www.novell.com/support/viewContent.do?externalId=7004997&sliceId=1
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."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Nov 4, 2009 | n/a | Not reported |
Affected Products
16 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Visual C\+\+Microsoft | 2005-sp1, 2008, 2008-sp1 | n/a |
| Visual StudioMicrosoft | 2003-sp1, 2005-sp1, 2008, 2008-sp1 | n/a |
| Windows 2000Microsoft | See advisory | n/a |
| Windows 2003 ServerMicrosoft | See advisory | n/a |
| Windows Server 2008Microsoft | See advisory | n/a |
Timeline
Publicly disclosed
Jul 29, 2009
Added to Industry KEV feed
Nov 4, 2009
Last updated
May 27, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
- CWE-264
References
- advisoryopenoffice.org · CVE-2009-2493
- advisorySUSE-SA:2009:053
- advisorySSRT100013
- advisoryadobe.com · apsb09-10.html
- advisoryadobe.com · apsb09-13.html
FAQ
Common Questions.
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 OleLo…
Affected: Visual C\+\+ (Microsoft) versions 2005-sp1, 2008, 2008-sp1; Visual Studio (Microsoft) versions 2003-sp1, 2005-sp1, 2008, 2008-sp1; Windows 2000 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Nov 4, 2009.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2009-2493 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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