CVE-2020-17131 json
Chakra Scripting Engine Memory Corruption Vulnerability
published 2020-12-09 5 y ago modified 2026-06-17 4 mo ago also GHSA-qwwg-gc55-qqrv , EUVD-2021-0865
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
Chakra Scripting Engine Memory Corruption Vulnerability
Patch / fix
- nuget Microsoft.ChakraCore 1.11.24
- microsoft chakracore 1.11.0
Exploit prediction
2.04% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 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 |
| CNA | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | Microsoft.ChakraCore | <1.11.24 |
1.11.24 |
Affected products
- Microsoft ChakraCore
- Microsoft Microsoft Edge (EdgeHTML-based)
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2020-17131
vendor-advisory, patch, web
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2020-17131
patch, vendor-advisory
-
github.com
/chakra-core/ChakraCore/pull/6531
web
-
nvd.nist.gov
/vuln/detail/CVE-2020-17131
advisory
-
github.com
/chakra-core/ChakraCore/wiki/Roadmap#v11124
web
Sources
- CVE List CVE-2020-17131
- GitHub Advisory GHSA-qwwg-gc55-qqrv
- NVD CVE-2020-17131
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.