CVE-1999-0347

High severity, CVSS 10.0. EPSS: 7.5% chance of exploitation in the next 30 days.

Internet Explorer 4.01 allows remote attackers to read local files and spoof web pages via a "%01" character in an "about:" Javascript URL, which causes Internet Explorer to use the domain specified after the character.

Published 1999-01-26. Last modified 2026-06-16.