CVE-2019-1367

HIGH KEV RANSOMWARE

Internet Explorer - Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2019-1367 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021, with confirmed use in ransomware campaigns. EIP tracks 1 public exploit from researchers including mandarenmanman.

AI-analyzed exploit summary This repository provides a detailed technical description of CVE-2019-1367, a memory corruption vulnerability in Internet Explorer's script engine that allows remote code execution. It includes affected versions, mitigation steps, and references to Microsoft's patch but lacks functional exploit code.

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-1221.

Exploits (1)

nomisec WRITEUP 3 stars
by mandarenmanman · poc
https://github.com/mandarenmanman/CVE-2019-1367

This repository provides a detailed technical description of CVE-2019-1367, a memory corruption vulnerability in Internet Explorer's script engine that allows remote code execution. It includes affected versions, mitigation steps, and references to Microsoft's patch but lacks functional exploit code.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Theoretical
Target: Internet Explorer 9, 10, 11
No auth needed
Prerequisites: User interaction required to visit a malicious website
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Scores

CVSS v3 7.5
EPSS 0.5273
EPSS Percentile 98.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2021-11-03
VulnCheck KEV 2019-09-23
InTheWild.io 2019-09-23
ENISA EUVD EUVD-2019-9924
Ransomware Use Confirmed
CWE
CWE-787
Status published
Products (3)
microsoft/internet_explorer 10
microsoft/internet_explorer 11
microsoft/internet_explorer 9
Published Sep 23, 2019
KEV Added Nov 03, 2021
Tracked Since Feb 18, 2026