No exploitation reportedFix available

CVE-2009-2493

No exploitation reported by the sources we read.

Published2009-07-29
WeaknessCWE-264 · CWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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."

Timeline

dates in UTC

2009-07-2917:30CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2009-2493?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2009-2493?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Microsoft visual studio

Branch	Affected	Fixed in	Source
2003.x	= 2003	no fix published	NVD
2005.x	= 2005	no fix published	NVD
2008.x	= 2008	no fix published	NVD

Microsoft visual c\+\+

Branch	Affected	Fixed in	Source
2005.x	= 2005	no fix published	NVD
2008.x	= 2008	no fix published	NVD

Microsoft windows 2000

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

www.adobe.comPatch
www.adobe.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2026-05-27
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.18.82026-05-27
NVDCVSS 2.09.3read 2026-10-23
CISA-ADPweakness (CWE)CWE-942026-05-27
NVDweakness (CWE)CWE-264read 2026-10-23
FIRST EPSSEPSS score37.8 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2009-07-29
Last Modified: 2026-06-16
NVD status: Modified

Frequently asked questions

What is CVE-2009-2493?

Is CVE-2009-2493 actively exploited?

Active exploitation of CVE-2009-2493 has not been confirmed. Its EPSS score was 37.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2009-2493?

CVE-2009-2493 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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