CVE-2003-1048: Microsoft Internet Explorer

High severity, CVSS 7.8. EPSS: 26.6% chance of exploitation in the next 30 days.

Double free vulnerability in mshtml.dll for certain versions of Internet Explorer 6.x allows remote attackers to cause a denial of service (application crash) via a malformed GIF image.

Affected products

• Microsoft Internet Explorer: version 5.01 only; version 5.5 only; version 6.0 only
• Microsoft Outlook: version 2000 only
• Microsoft Windows 98: affected versions not specified
• Microsoft Windows 98se: affected versions not specified
• Microsoft Windows Me: affected versions not specified
• Microsoft Windows Nt: version 4.0 only
• Microsoft Windows Server 2003: affected versions not specified
• Microsoft Windows XP: affected versions not specified

Published 2004-07-27. Last modified 2026-06-16.