VDB
CVE-2021-42279
CVE-2021-42279
PUBLISHED
CVSS 4.2 MEDIUM
Chakra Scripting Engine Memory Corruption Vulnerability
Reported by microsoft · Published November 10, 2021
Chakra Scripting Engine Memory Corruption Vulnerability
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| Windows 10 Version 2004 | Microsoft | 10.0.19041.1348 |
Risk scores
CVSS 3.1
4.2
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | ChakraCore | - |
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 |
| Microsoft | Windows 10 Version 1809 | 10.0.0 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 |
| Microsoft | Windows 11 version 21H2 | 10.0.22000.0 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 |
| Microsoft | Windows Server version 2004 | 10.0.0 |
| Microsoft | Windows Server version 20H2 | 10.0.0 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 |
| Microsoft | ChakraCore | * |
| microsoft | windows_10_21H1 | 10.0.0 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 |
| Microsoft | Windows Server version 2004 | 10.0.0 |
…and 22 more
Timeline
- Nov 9, 2021 CVE Published
- Nov 10, 2021 EPSS Score (30 in total, the first dated here)
- Aug 3, 2022 CVE Updated
- Nov 29, 2024 PoC Published
- Mar 17, 2026 Security Advisory (5 in total, the first dated here)
- Jul 20, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-42279
vulnetix vdb fixes CVE-2021-42279Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2021-42279/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart