CVE-2021-42279
published 2021-11-10CVE-2021-42279: Chakra Scripting Engine Memory Corruption Vulnerability
PriorityP339high7.5CVSS 3.1
AVNACHPRNUIRSUCHIHAH
EPSS
1.95%
78.0th percentile
Chakra Scripting Engine Memory Corruption Vulnerability
Affected
36 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | chakracore | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10_version_1507 | >= 10.0.0 < 10.0.10240.19119 | 10.0.10240.19119 |
| microsoft | windows_10_version_1607 | >= 10.0.0 < 10.0.14393.4770 | 10.0.14393.4770 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.2300 | 10.0.17763.2300 |
| microsoft | windows_10_version_1909 | >= 10.0.0 < 10.0.18363.1916 | 10.0.18363.1916 |
| microsoft | windows_10_version_2004 | >= 10.0.0 < 10.0.19041.1348 | 10.0.19041.1348 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.1348 | 10.0.19042.1348 |
| microsoft | windows_10_version_21h1 | >= 10.0.0 < 10.0.19043.1348 | 10.0.19043.1348 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.318 | 10.0.22000.318 |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | >= 10.0.0 < 10.0.14393.4770 | 10.0.14393.4770 |
| microsoft | windows_server_2019 | >= 10.0.0 < 10.0.17763.2300 | 10.0.17763.2300 |
| microsoft | windows_server_2022 | >= 10.0.0 < 10.0.20348.350 | 10.0.20348.350 |
| microsoft | windows_server_version_2004 | >= 10.0.0 < 10.0.19041.1348 | 10.0.19041.1348 |
| microsoft | windows_server_version_20h2 | >= 10.0.0 < 10.0.19042.1348 | 10.0.19042.1348 |
| msrc | chakracore | — | — |
| msrc | windows_10 | — | — |
| msrc | windows_10_version_1607 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.05.1MEDIUMAV:N/AC:H/Au:N/C:P/I:P/A:P
ghsa7.5HIGH
osv7.5HIGH
vendor_msrc4.2MEDIUM
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Microsoft
Chakra Scripting Engine Memory Corruption Vulnerability
vendor_msrc·2021-11-09·CVSS 4.2
CVE-2021-42279 [MEDIUM] Chakra Scripting Engine Memory Corruption Vulnerability
Chakra Scripting Engine Memory Corruption Vulnerability
Windows Scripting: Windows Scripting
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5007186
Reference: https://support.microsoft.com/help/5007186
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5007215
Reference: https://support.microsoft.com/help/5007215
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5007205
Reference: https://support.microsoft.com/help/5007205
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5007189
Refe
OSV
Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption
osv·2022-05-24·CVSS 7.5
CVE-2021-42279 [HIGH] Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption
Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption
Chakra Scripting Engine and ChakraCore are vulnerable to memory corruption due to an out-of-bounds write. The Microsoft advisory for CVE-2021-42279 was modified in August 2022 to include Microsoft.ChakraCore as an affected product.
GHSA
Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption
ghsa·2022-05-24·CVSS 7.5
CVE-2021-42279 [HIGH] CWE-787 Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption
Chakra Scripting Engine and ChakraCore Vulnerable to Memory Corruption
Chakra Scripting Engine and ChakraCore are vulnerable to memory corruption due to an out-of-bounds write. The Microsoft advisory for CVE-2021-42279 was modified in August 2022 to include Microsoft.ChakraCore as an affected product.
No detection rules found.
No public exploits indexed.
Qualys
Microsoft & Adobe Patch Tuesday (November 2021) – Microsoft 55 Vulnerabilities with 6 Critical, 6 Zero-Days. Adobe 4 Vulnerabilities | Qualys
blogs_qualys·2021-11-11·CVSS 9.0
CVE-2021-42298 [CRITICAL] Microsoft & Adobe Patch Tuesday (November 2021) – Microsoft 55 Vulnerabilities with 6 Critical, 6 Zero-Days. Adobe 4 Vulnerabilities | Qualys
#### Table of Contents
- Microsoft Patch Tuesday November 2021
- Adobe Patch Tuesday October 2021
- Discover Patch Tuesday Vulnerabilities in VMDR
- Respond by Patching
- Patch Tuesday Dashboard
- About Patch Tuesday
## Microsoft Patch Tuesday – November 2021
Microsoft patched 55 vulnerabilities in their November 2021 Patch Tuesday release, of which six are rated as critical severity and six were previously reported as zero-days.
### Critical Microsoft Vulnerabilities Patched
CVE-2021-42298 – Microsoft Defender Remote Code Execution Vulnerability
This vulnerability in Microsoft Defender can be exploited using Maliciously crafted files. The remote code execution vulnerability will be triggered when the malicious file is opened by a user or scanned automatically via an outdated version
Qualys
Microsoft & Adobe Patch Tuesday (November 2021) – Microsoft 55 Vulnerabilities with 6 Critical, 6 Zero-Days. Adobe 4 Vulnerabilities
blogs_qualys·2021-11-11·CVSS 9.0
CVE-2021-42298 [CRITICAL] Microsoft & Adobe Patch Tuesday (November 2021) – Microsoft 55 Vulnerabilities with 6 Critical, 6 Zero-Days. Adobe 4 Vulnerabilities
## Table of Contents
Microsoft Patch Tuesday November 2021
Adobe Patch Tuesday October 2021
Discover Patch Tuesday Vulnerabilities in VMDR
Respond by Patching
Patch Tuesday Dashboard
About Patch Tuesday
## Microsoft Patch Tuesday – November 2021
Microsoft patched 55 vulnerabilities in their November 2021 Patch Tuesday release, of which six are rated as critical severity and six were previously reported as zero-days.
## Critical Microsoft Vulnerabilities Patched
CVE-2021-42298 – Microsoft Defender Remote Code Execution Vulnerability
This vulnerability in Microsoft Defender can be exploited using Maliciously crafted files. The remote code execution vulnerability will be triggered when the malicious file is opened by a user or scanned automatically via an outdated version of Micros
Crowdstrike
November 2021 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] November 2021 Patch Tuesday: Updates and Analysis
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
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How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
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How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
Crowdstrike
November 2021 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] November 2021 Patch Tuesday: Updates and Analysis
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand AT
2021-11-10
Published