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

Vulnerability summary

CVE-2018-8298 is a high (CVSS 7.6) Type Confusion vulnerability in ChakraCore ChakraCore scripting engine. It is known to be exploited: CISA lists it, first on 03-03-2022. EPSS estimates a 74.69% chance of exploitation in the next 30 days, higher than 99.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 11-07-2018
   PublishedVulnerability first disclosed.
2. 03-03-2022
   Added to CISA KEVChakraCore Scripting Engine Type Confusion Vulnerability
3. 17-03-2022
   CISA remediation dueApply updates per vendor instructions.
4. 21-10-2025
   Last modifiedVulnerability information updated.

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.

• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.