CVE-2007-1749: Microsoft Internet Explorer

High severity, CVSS 9.3. EPSS: 41.5% chance of exploitation in the next 30 days.

Integer underflow in the CDownloadSink class code in the Vector Markup Language (VML) component (VGX.DLL), as used in Internet Explorer 5.01, 6, and 7 allows remote attackers to execute arbitrary code via compressed content with an invalid buffer size, which triggers a heap-based buffer overflow.

Affected products

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

Published 2007-08-14. Last modified 2026-06-16.