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TI-2009-00858 Aliases CVE-2009-0901GHSA-5q85-2xfh-7gpf

The Active Template Library (ATL) in Microsoft Visual Studio .NET 2003 SP1, Visual Studio…

Priority HIGH 66CWE-457Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-94.

Summary

The Active Template Library (ATL) in Microsoft Visual Studio .NET 2003 SP1, Visual Studio 2005 SP1 and 2008 Gold, 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 prevent VariantClear calls on an uninitialized VARIANT, which allows remote attackers to execute arbitrary code via a malformed stream to an ATL (1) component or (2) control, related to ATL headers and error handling, aka "ATL Uninitialized Object Vulnerability."

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.36608 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:visual_c\+\+:2005:sp1_redistribution_pkg:*:*:*:*:*:*2005 sp1_redistribution_pkgVulnerableMicrosoft
cpe:2.3:a:microsoft:visual_c\+\+:2008:redistribution_pkg:*:*:*:*:*:*2008 redistribution_pkgVulnerableMicrosoft
cpe:2.3:a:microsoft:visual_c\+\+:2008:sp1_redistribution_pkg:*:*:*:*:*:*2008 sp1_redistribution_pkgVulnerableMicrosoft
cpe:2.3:a:microsoft:visual_studio:2005:sp1:*:*:*:*:*:*2005 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:visual_studio:2005:sp1:64_bit_hosted_visual_c\+\+_tools:*:*:*:*:*2005 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:visual_studio:2008:*:*:*:*:*:*:*2008VulnerableMicrosoft
cpe:2.3:a:microsoft:visual_studio:2008:sp1:*:*:*:*:*:*2008 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:visual_studio_.net:2003:sp1:*:*:*:*:*:*2003 sp1VulnerableMicrosoft
  • cpe:2.3:a:microsoft:visual_c\+\+:2005:sp1_redistribution_pkg:*:*:*:*:*:* Versions 2005 sp1_redistribution_pkg Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_c\+\+:2008:redistribution_pkg:*:*:*:*:*:* Versions 2008 redistribution_pkg Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_c\+\+:2008:sp1_redistribution_pkg:*:*:*:*:*:* Versions 2008 sp1_redistribution_pkg Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio:2005:sp1:*:*:*:*:*:* Versions 2005 sp1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio:2005:sp1:64_bit_hosted_visual_c\+\+_tools:*:*:*:*:* Versions 2005 sp1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio:2008:*:*:*:*:*:*:* Versions 2008 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio:2008:sp1:*:*:*:*:*:* Versions 2008 sp1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio_.net:2003:sp1:*:*:*:*:*:* Versions 2003 sp1 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-0901
  2. 2026-10-03 Alias added: GHSA-5q85-2xfh-7gpf

References

Patch 2

Advisory 8

Other 10

  • TI-2004-00171 Buffer overflow in the JPEG (JPG) parsing engine in the Microsoft Graphic Device… CVSS 2.0HIGH 9.3
  • TI-2009-02381 The Active Template Library (ATL) in Microsoft Visual Studio .NET 2003 SP1, Visual Studio… CVSS 3.1HIGH 8.8
  • TI-2009-02383 The Active Template Library (ATL) in Microsoft Visual Studio .NET 2003 SP1, Visual Studio… CVSS 3.1MEDIUM 6.5
  • TI-2010-03049 Untrusted search path vulnerability in the Microsoft Foundation Class (MFC) Library in… CVSS 3.1HIGH 7.8
  • TI-2007-00819 The 64-bit versions of Microsoft Visual C++ 8.0 standard library (MSVCR80.DLL) time… CVSS 2.0MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences