CVEs / CVE-2018-8298

CVE-2018-8298: ChakraCore Scripting Engine Type Confusion Vulnerability

Known exploited in the CISA KEV catalog since 3 Mar 2022
high 7.5 CVSS 3.1 (NVD)
EPSS 74.6% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
Last changed at its sources 24 Oct 2026

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Summary

The ChakraCore scripting engine contains a type confusion vulnerability which can allow for remote code execution.
CISA, Known Exploited Vulnerabilities catalog

Description

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.
The CVE record, via NVD · published 11 Jul 2018 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
Microsoft ChakraCore	ChakraCore	—

As stated by OSV
Product	Affected	Fixed in
Microsoft.ChakraCore (NuGet)	before 1.10.1	1.10.1

Package versions from GHSA-wgw2-wwq8-c7wf.

Exploitation

In CISA KEV since	3 Mar 2022
Due date for US federal agencies	17 Mar 2022
Used in ransomware campaigns	Unknown
Required action	Apply updates per vendor instructions.

Severity

CVSS 3.1	7.5 high `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-843

References

CVE-2018-8298 on NVD
CVE-2018-8298 in the CISA KEV catalog
CVE-2018-8298 on OSV
http://www.securityfocus.com/bid/104639 Broken Link, Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8298 Patch, Vendor Advisory
https://www.exploit-db.com/exploits/45217/ Exploit, Third Party Advisory, VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8298 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.