CVE-2007-5355: Microsoft Internet Explorer

Medium severity, CVSS 5.8. EPSS: 17.1% chance of exploitation in the next 30 days.

The Web Proxy Auto-Discovery (WPAD) feature in Microsoft Internet Explorer 6 and 7, when a primary DNS suffix with three or more components is configured, resolves an unqualified wpad hostname in a second-level domain outside this configured DNS domain, which allows remote WPAD servers to conduct man-in-the-middle (MITM) attacks.

Affected products

• Microsoft Internet Explorer: version 5.01 only; version 6 only; version 7 only

Published 2007-12-05. Last modified 2026-06-16.