A vulnerability exists in Microsoft Chakra JIT server, aka 'Scripting Engine Elevation of Privileged Vulnerability'.
Priority MEDIUM 42Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.
Summary
A vulnerability exists in Microsoft Chakra JIT server, aka 'Scripting Engine Elevation of Privileged Vulnerability'.
Why it matters now
EPSS 0.04345 91st percentileScored 2026-11-07
Fix Fixed Microsoft.ChakraCore (NuGet): 1.11.6
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft Edge | Windows 10 Version 1703 for 32-bit Systems; Windows 10 Version 1703 for x64-based Systems; Windows 10 Version 1709 for 32-bit Systems; Windows 10 Version 1709 for x64-based Systems; Windows 10 Version 1803 for 32-bit Systems; Windows 10 Version 1803 for x64-based Systems; Windows 10 Version 1803 for ARM64-based Systems; Windows 10 Version 1809 for 32-bit Systems; Windows 10 Version 1809 for x64-based Systems; Windows 10 Version 1809 for ARM64-based Systems; Windows Server 2019; Windows 10 Version 1709 for ARM64-based Systems | — | No fix listed | CNA |
| Microsoft | ChakraCore | all versions | — | No fix listed | CNA |
| — | Microsoft.ChakraCore (NuGet) | before 1.11.6 | 1.11.6 | Patch available | GHSA-6c6r-39cv-x5fq |
- Microsoft Edge VendorMicrosoft Affected Windows 10 Version 1703 for 32-bit Systems; Windows 10 Version 1703 for x64-based Systems; Windows 10 Version 1709 for 32-bit Systems; Windows 10 Version 1709 for x64-based Systems; Windows 10 Version 1803 for 32-bit Systems; Windows 10 Version 1803 for x64-based Systems; Windows 10 Version 1803 for ARM64-based Systems; Windows 10 Version 1809 for 32-bit Systems; Windows 10 Version 1809 for x64-based Systems; Windows 10 Version 1809 for ARM64-based Systems; Windows Server 2019; Windows 10 Version 1709 for ARM64-based Systems Fixed in — No fix listed CNA
- ChakraCore VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Microsoft.ChakraCore (NuGet) Vendor— Affected before 1.11.6 Fixed in 1.11.6 Patch available GHSA-6c6r-39cv-x5fq
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:* | 1703 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* | 1709 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* | 1803 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* | 1809 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:* | before 1.11.6 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:* Versions 1703 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* Versions 1709 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* Versions 1803 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* Versions 1809 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:* Versions before 1.11.6 Vulnerable ·Microsoft
Remediation
- Fix · GHSA-6c6r-39cv-x5fq Microsoft.ChakraCore (NuGet) Fixed in 1.11.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2019-0649
- 2026-10-03 Alias added: GHSA-6c6r-39cv-x5fq
References
More Microsoft Chakracore vulnerabilities
- TI-2020-00848 Microsoft Browser Memory Corruption Vulnerability KEVCVSS 3.1HIGH 7.5
- TI-2018-06000 Type confusion in Microsoft ChakraCore KEVCVSS 3.1HIGH 7.5
- TI-2019-00333 Out-of-bounds write in Microsoft Edge CVSS 3.0HIGH 7.5
- TI-2019-00359 Out-of-bounds write in Microsoft Edge CVSS 3.0HIGH 7.5
- TI-2018-00721 Out-of-bounds write in Microsoft Edge CVSS 3.0HIGH 7.5
- TI-2018-00720 Out-of-bounds write in Microsoft Edge CVSS 3.0HIGH 7.5
Sources
- CVE-2019-0649 · CVE Program
- CVE-2019-0649 · NVD
- FIRST EPSS
- GHSA-6c6r-39cv-x5fq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences