CVE-2018-8459: ChakraCore RCE Vulnerability in Microsoft.ChakraCore
Summary
CVE-2018-8459: ChakraCore RCE Vulnerability. Affects Microsoft.ChakraCore versions < 1.11.1. Fixed in 1.11.1. How to fix ↓
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Background
Microsoft.ChakraCore is a scripting engine used by Microsoft Edge. It provides support for executing JavaScript code and is an integral part of the Edge browser. ChakraCore is also available as a standalone package for developers to embed in their applications. This vulnerability affects versions prior to 1.11.1 of the Microsoft.ChakraCore package.
Vulnerability Detail
A remote code execution vulnerability, known as CVE-2018-8459 or "Scripting Engine Memory Corruption Vulnerability," has been discovered in ChakraCore. This vulnerability arises from the mishandling of objects in memory by the ChakraCore scripting engine. It affects both Microsoft Edge and ChakraCore. Exploitation of this vulnerability could allow an attacker to execute arbitrary code on a target system. The severity of this vulnerability is rated as HIGH with a CVSS score of 7.5.
How To Fix
Latest published version: 1.11.24 as of 22 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
1.11.1
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is crucial to update to the fixed version of the Microsoft.ChakraCore package to ensure the security of the system.
Conclusion
The CVE-2018-8459 vulnerability in Microsoft.ChakraCore poses a significant risk as it allows remote code execution. To mitigate this vulnerability, it is crucial to update the Microsoft.ChakraCore package to version 1.11.1 or later. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Microsoft.ChakraCore →
FAQ
Microsoft.ChakraCore is a scripting engine used by Microsoft Edge and can be embedded in other applications.
This vulnerability allows remote code execution, which means an attacker could execute arbitrary code on a target system.
To fix this vulnerability, update the Microsoft.ChakraCore package to version 1.11.1 or later.
No, there is no known workaround. Updating to the fixed version is the recommended solution.
The severity of this vulnerability is rated as HIGH with a CVSS score of 7.5.
References
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