CVE-2009-2495: Microsoft Visual C++

Medium severity, CVSS 6.5. EPSS: 34.3% chance of exploitation in the next 30 days.

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 does not properly enforce string termination, which allows remote attackers to obtain sensitive information via a crafted HTML document with an ATL (1) component or (2) control that triggers a buffer over-read, related to ATL headers and buffer allocation, aka "ATL Null String Vulnerability."

Affected products

• Microsoft Visual C++: version 2005 only; version 2008 only
• Microsoft Visual Studio: version 2005 only; version 2008 only
• Microsoft Visual Studio .net: version 2003 only

Published 2009-07-29. Last modified 2026-06-16.