ACTIVELY EXPLOITED

CVE-2010-3962: Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability

Facts
VendorMicrosoft
ProductInternet Explorer
Actively exploitedYes
Added to CISA KEV6 Oct 2025
CISA federal deadline27 Oct 2025

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 an uninitialized memory corruption vulnerability that could allow for remote code execution. The impacted product 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.