Type confusion in Microsoft ChakraCore
Priority HIGH 68CWE-843Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-843 and the CVSS impact.
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 affects ChakraCore. This CVE ID is unique from CVE-2018-8266, CVE-2018-8380, CVE-2018-8381.
Why it matters now
EPSS 0.64106 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Microsoft.ChakraCore (NuGet): 1.10.2
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 | ChakraCore | ChakraCore | — | No fix listed | CNA |
| — | Microsoft.ChakraCore (NuGet) | before 1.10.2 | 1.10.2 | Patch available | GHSA-ggvv-6v25-r49r |
- ChakraCore VendorMicrosoft Affected ChakraCore Fixed in — No fix listed CNA
- Microsoft.ChakraCore (NuGet) Vendor— Affected before 1.10.2 Fixed in 1.10.2 Patch available GHSA-ggvv-6v25-r49r
Remediation
- Fix · GHSA-ggvv-6v25-r49r Microsoft.ChakraCore (NuGet) Fixed in 1.10.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-8384
- 2026-10-03 Alias added: GHSA-ggvv-6v25-r49r
References
Exploit 1
Other 5
- https://github.com/chakra-core/ChakraCore/pull/5596
- https://github.com/chakra-core/ChakraCore/commit/765bcd2c801eedc07fd0a4e90f69d41c483aa74a
- https://github.com/chakra-core/ChakraCore
- https://web.archive.org/web/20210124194908/http://www.securityfocus.com/bid/104981
- https://www.exploit-db.com/exploits/45431
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-2018-8384 · CVE Program
- CVE-2018-8384 · NVD
- FIRST EPSS
- GHSA-ggvv-6v25-r49r · 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