CVE-2010-3972: Microsoft Internet Information Services

High severity, CVSS 10.0. EPSS: 94.5% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0 and 7.5 for Internet Information Services (IIS) 7.0, and IIS 7.5, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted FTP command, aka "IIS FTP Service Heap Buffer Overrun Vulnerability." NOTE: some of these details are obtained from third party information.

Affected products

• Microsoft Internet Information Services: version 7.5 only

Published 2010-12-23. Last modified 2026-06-16.