TI-2018-05923 Aliases CVE-2018-8178 GHSA-hgmx-vqh4-mpgw

Out-of-bounds write in Microsoft ChakraCore

MEDIUM 49CWE-787Published 2018-05-09 · Updated 2024-08-05

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: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka "Microsoft Browser Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge.

Why it matters now

EPSS 0.15463 96th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

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	Internet Explorer 11	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	—	No fix listed	CNA
Microsoft	Microsoft Edge	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	—	No fix listed	CNA

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

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:edge:-:::::::*	not specified by NVD	Vulnerable	Microsoft
cpe:2.3:a:microsoft:internet_explorer:11:::::::*	11	Vulnerable	Microsoft
cpe:2.3:a:microsoft:chakracore::::::::	up to 1.8.3	Vulnerable	Microsoft

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

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-8178
2026-10-03 Alias added: GHSA-hgmx-vqh4-mpgw

References

Patch 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8178

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