ACTIVELY EXPLOITED

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

Facts
VendorMicrosoft
ProductInternet Explorer
Actively exploitedYes
Added to CISA KEV12 Aug 2025
CISA federal deadline2 Sep 2025
Weakness (CWE)CWE-399

Required action (CISA's text)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Description (NVD)

Microsoft Internet Explorer contains a memory corruption vulnerability that allows for remote code execution. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

SOURCES

Other Microsoft flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.