CVE-2007-0087: Microsoft Internet Information Server

High severity, CVSS 7.8. EPSS: 24.4% chance of exploitation in the next 30 days.

Microsoft Internet Information Services (IIS), when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service (network bandwidth consumption) via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by third parties, who state that the large window size required by the attack is not normally supported or configured by the server, or that a DDoS-style attack would accomplish the same goal

Affected products

• Microsoft Internet Information Server: any version

Published 2007-01-05. Last modified 2026-06-16.