CVE-2013-3893: Microsoft Internet Explorer Resource Management Errors Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2025-08-12. EPSS: 87.5% chance of exploitation in the next 30 days.

Use-after-free vulnerability in the SetMouseCapture implementation in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code via crafted JavaScript strings, as demonstrated by use of an ms-help: URL that triggers loading of hxds.dll.

Affected products

• Microsoft Internet Explorer: version 6 only; version 7 only; version 8 only; version 9 only; version 10 only; version 11 only

Published 2013-09-18. Last modified 2026-06-16.