CVE-2019-1237 json
Out-of-bounds write
published 2019-09-11 7 y ago modified 2026-06-17 4 mo ago also GHSA-q99r-j969-6jwr , EUVD-2021-0696
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 8.7%
- EPSS 8.7% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka 'Chakra Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-1138, CVE-2019-1217, CVE-2019-1298, CVE-2019-1300.
Patch / fix
- nuget Microsoft.ChakraCore 1.11.13
- microsoft chakracore 1.11.13
Exploit prediction
8.67% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 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 | 7.6 | AV:N/AC:H/Au:N/C:C/I:C/A:C |
| 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 | <1.11.13 |
1.11.13 |
Affected products
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows Server 2016
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows Server 2019
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for 32-bit Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems
- Microsoft Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems
- Microsoft ChakraCore
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2019-1237
web, patch, vendor-advisory
-
github.com
/chakra-core/ChakraCore/commit/31f2588c7ba5b446bccf2769e9ecf4d444b73045
web
-
github.com
/chakra-core/ChakraCore/commit/7e9a2ee60baa95ceb4f48f522f823c812ca90c80
web
-
nvd.nist.gov
/vuln/detail/CVE-2019-1237
advisory
Sources
- CVE List CVE-2019-1237
- GitHub Advisory GHSA-q99r-j969-6jwr
- NVD CVE-2019-1237
Fencer Intel 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.