CVE-2006-0034: Microsoft Distributed Transaction Coordinator

High severity, CVSS 7.5. EPSS: 31.4% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the CRpcIoManagerServer::BuildContext function in msdtcprx.dll for Microsoft Distributed Transaction Coordinator (MSDTC) for Windows NT 4.0 and Windows 2000 SP2 and SP3 allows remote attackers to execute arbitrary code via a long fifth argument to the BuildContextW or BuildContext opcode, which triggers a bug in the NdrAllocate function, aka the MSDTC Invalid Memory Access Vulnerability.

Affected products

• Microsoft Distributed Transaction Coordinator: any version
• Microsoft Windows 2000: any version
• Microsoft Windows 2003 Server: version enterprise only; version enterprise_64-bit only; version r2 only; version standard only; version web only
• Microsoft Windows Nt: version 4.0 only
• Microsoft Windows XP: any version

Published 2006-05-10. Last modified 2026-06-16.