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TI-2018-00946 Aliases CVE-2018-1022GHSA-wjmf-6x7g-xq67

Out-of-bounds write in Microsoft ChakraCore

Priority MEDIUM 49CWE-787Published · 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-787 and the CVSS impact.

Summary

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-0945, CVE-2018-0946, CVE-2018-0951, CVE-2018-0953, CVE-2018-0954, CVE-2018-0955, CVE-2018-8114, CVE-2018-8122, CVE-2018-8128, CVE-2018-8137, CVE-2018-8139.

Why it matters now

EPSS 0.15463 96th percentileScored 2026-11-07
Fix Fixed Microsoft.ChakraCore (NuGet): 1.8.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftChakraCoreChakraCore—No fix listedCNA
MicrosoftInternet Explorer 11Windows 10 for 32-bit Systems; Windows 10 for x64-based Systems; Windows 10 Version 1607 for 32-bit Systems; Windows 10 Version 1607 for x64-based Systems; 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 7 for 32-bit Systems Service Pack 1; Windows 7 for x64-based Systems Service Pack 1; Windows 8.1 for 32-bit systems; Windows 8.1 for x64-based systems; Windows RT 8.1; Windows Server 2008 R2 for x64-based Systems Service Pack 1; Windows Server 2012 R2; Windows Server 2016—No fix listedCNA
MicrosoftMicrosoft EdgeWindows 10 for 32-bit Systems; Windows 10 for x64-based Systems; Windows 10 Version 1607 for 32-bit Systems; Windows 10 Version 1607 for x64-based Systems; 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 Server 2016—No fix listedCNA
—Microsoft.ChakraCore (NuGet)before 1.8.41.8.4Patch availableGHSA-wjmf-6x7g-xq67
  • ChakraCore VendorMicrosoft Affected ChakraCore Fixed in — No fix listed CNA
  • Internet Explorer 11 VendorMicrosoft Affected Windows 10 for 32-bit Systems; Windows 10 for x64-based Systems; Windows 10 Version 1607 for 32-bit Systems; Windows 10 Version 1607 for x64-based Systems; 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 7 for 32-bit Systems Service Pack 1; Windows 7 for x64-based Systems Service Pack 1; Windows 8.1 for 32-bit systems; Windows 8.1 for x64-based systems; Windows RT 8.1; Windows Server 2008 R2 for x64-based Systems Service Pack 1; Windows Server 2012 R2; Windows Server 2016 Fixed in — No fix listed CNA
  • Microsoft Edge VendorMicrosoft Affected Windows 10 for 32-bit Systems; Windows 10 for x64-based Systems; Windows 10 Version 1607 for 32-bit Systems; Windows 10 Version 1607 for x64-based Systems; 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 Server 2016 Fixed in — No fix listed CNA
  • Microsoft.ChakraCore (NuGet) Vendor— Affected before 1.8.4 Fixed in 1.8.4 Patch available GHSA-wjmf-6x7g-xq67

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:*11VulnerableMicrosoft
cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*up to 1.8.3VulnerableMicrosoft
  • cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:* Versions 11 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:* Versions up to 1.8.3 Vulnerable ·Microsoft

Remediation

  • Fix · GHSA-wjmf-6x7g-xq67 Microsoft.ChakraCore (NuGet) Fixed in 1.8.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1022
  2. 2026-10-03 Alias added: GHSA-wjmf-6x7g-xq67

References

Patch 1

Advisory 1

Other 4

  • 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
See all 254 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences