# CVE-2021-42279: Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption

Source: https://junglewise.ai/threats/cve-2021-42279-chakra-scripting-engine-and-chakracore-vulnerable-to-memory  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-24  
License: CC BY 4.0 with a link back

CVE-2021-42279 · Severity: low · CVSS 3.1 · Published 2022-05-24

Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption

Technologies: [Microsoft.ChakraCore (NuGet)](https://junglewise.ai/threats/technologies/microsoft-chakracore). Vendors: [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2021-42279 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2021-42279 being exploited in the wild.

**How severe is CVE-2021-42279?** Low severity, with a CVSS score of 3.1, published 24 May 2022.

**Which products and versions are affected?** Microsoft.ChakraCore (NuGet) ECOSYSTEM:introduced=0,last_affected=1.11.24.

**Is there a fix for CVE-2021-42279?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2021-42279?** Check whether you run Microsoft.ChakraCore (NuGet) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft.ChakraCore (NuGet) ECOSYSTEM:introduced=0,last_affected=1.11.24

## Identifiers

- CVE-2021-42279
- GHSA-jgrp-6qqq-3284

## Related threats

- [ChakraCore information disclosure vulnerability](https://junglewise.ai/threats/cve-2020-0813-chakracore-information-disclosure-vulnerability)
- [Chakra Scripting Engine RCE via Out-of-bounds write](https://junglewise.ai/threats/cve-2019-1051-chakra-scripting-engine-rce-via-out-of-bounds-write)
- [Chakra Scripting Engine RCE via Out-of-bounds write](https://junglewise.ai/threats/cve-2019-1052-chakra-scripting-engine-rce-via-out-of-bounds-write)
- [ChakraCore RCE via Out-of-bounds write](https://junglewise.ai/threats/cve-2019-1002-chakracore-rce-via-out-of-bounds-write)
- [Chakra Scripting Engine RCE Vulnerability](https://junglewise.ai/threats/cve-2019-1024-chakra-scripting-engine-rce-vulnerability)