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TI-2018-00799 Aliases CVE-2018-0858GHSA-7gjv-9m33-chg8

Out-of-bounds write in Microsoft ChakraCore

Priority MEDIUM 48CWE-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

ChakraCore allows remote code execution, due to how the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0840, CVE-2018-0856, CVE-2018-0857, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.

Why it matters now

EPSS 0.1483 96th percentileScored 2026-11-07
Fix Fixed Microsoft.ChakraCore (NuGet): 1.8.1

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftChakraCoreChakraCore—No fix listedCNA
—Microsoft.ChakraCore (NuGet)before 1.8.11.8.1Patch availableGHSA-7gjv-9m33-chg8
  • ChakraCore VendorMicrosoft Affected ChakraCore Fixed in — No fix listed CNA
  • Microsoft.ChakraCore (NuGet) Vendor— Affected before 1.8.1 Fixed in 1.8.1 Patch available GHSA-7gjv-9m33-chg8

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:chakracore:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:a:microsoft:chakracore:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

  • Fix · GHSA-7gjv-9m33-chg8 Microsoft.ChakraCore (NuGet) Fixed in 1.8.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0858
  2. 2026-10-03 Alias added: GHSA-7gjv-9m33-chg8

References

Advisory 2

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