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CVE-2018-8298

HighPublished

ChakraCore Scripting Engine Type Confusion Vulnerability

Published: Jul 11, 2018
Updated: Oct 21, 2025
Assigning CNA: microsoft
Evidence observed: Aug 17, 2018

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

74.5%

High · next 30 days

Percentile: 99.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8288, CVE-2018-8291, CVE-2018-8296.

Sources

Microsoft Edge Chakra JIT - InitializeNumberFormat and InitializeDateTimeFormat Type ConfusionExploit
Google Security Research · windows · Aug 17, 2018

Responsible use

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