ACTIVELY EXPLOITED

CVE-2018-8373: Microsoft Scripting Engine Memory Corruption Vulnerability

Facts
VendorMicrosoft
ProductInternet Explorer Scripting Engine
Actively exploitedYes
Added to CISA KEV25 Mar 2022
CISA federal deadline15 Apr 2022
Weakness (CWE)CWE-787

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer.

SOURCES

Other Microsoft flaws

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