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TI-2018-05887 Aliases CVE-2018-8139GHSA-5hxp-3237-j2hp

Out-of-bounds read in Microsoft Edge

Priority HIGH 69CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
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 remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Microsoft Edge, aka "Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. 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-2018-1022, CVE-2018-8114, CVE-2018-8122, CVE-2018-8128, CVE-2018-8137.

Why it matters now

EPSS 0.66313 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
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
MicrosoftMicrosoft EdgeWindows 10 Version 1803 for 32-bit Systems; Windows 10 Version 1803 for x64-based Systems—No fix listedCNA
MicrosoftChakraCoreChakraCore—No fix listedCNA
—Microsoft.ChakraCore (NuGet)before 1.8.41.8.4Patch availableGHSA-5hxp-3237-j2hp
  • Microsoft Edge VendorMicrosoft Affected Windows 10 Version 1803 for 32-bit Systems; Windows 10 Version 1803 for x64-based Systems Fixed in — No fix listed CNA
  • ChakraCore VendorMicrosoft Affected ChakraCore Fixed in — No fix listed CNA
  • Microsoft.ChakraCore (NuGet) Vendor— Affected before 1.8.4 Fixed in 1.8.4 Patch available GHSA-5hxp-3237-j2hp

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*1803Running onMicrosoft
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:o:microsoft:windows_10:1803:*:*:*:*:*:*:* Versions 1803 Running on ·Microsoft
  • cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:* Versions up to 1.8.3 Vulnerable ·Microsoft

Remediation

  • Fix · GHSA-5hxp-3237-j2hp Microsoft.ChakraCore (NuGet) Fixed in 1.8.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-8139
  2. 2026-10-03 Alias added: GHSA-5hxp-3237-j2hp

References

Exploit 1

Patch 1

Advisory 1

Other 5

  • 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