CVE-2010-0555: Microsoft Internet Explorer

High severity, CVSS 9.3. EPSS: 20.8% chance of exploitation in the next 30 days.

Microsoft Internet Explorer 5.01 SP4, 6, 6 SP1, 7, and 8 does not prevent rendering of non-HTML local files as HTML documents, which allows remote attackers to bypass intended access restrictions and read arbitrary files via vectors involving the product's use of text/html as the default content type for files that are encountered after a redirection, aka the URLMON sniffing vulnerability, a variant of CVE-2009-1140 and related to CVE-2008-1448.

Affected products

• Microsoft Internet Explorer: version 6 only; version 7 only; version 5.01 only
• Microsoft Windows 2000: any version
• Microsoft Windows Server 2003: any version
• Microsoft Windows Server 2008: any version
• Microsoft Windows Vista: any version; version gold only
• Microsoft Windows XP: any version

Published 2010-02-04. Last modified 2026-06-16.