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Vulnerability details: VCID-zwrk-qm3p-c7aj
Vulnerability ID VCID-zwrk-qm3p-c7aj
Aliases CVE-2018-8227
GHSA-gqh4-4r89-pr95
Summary Out-of-bounds Write 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 Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8229.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-787 Out-of-bounds Write
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.21096 https://api.first.org/data/v1/epss?cve=CVE-2018-8227
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-gqh4-4r89-pr95
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore
generic_textual HIGH https://github.com/chakra-core/ChakraCore
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/commit/8af718902bfdc23bdce67d013eb25bd73773e306
generic_textual HIGH https://github.com/chakra-core/ChakraCore/commit/8af718902bfdc23bdce67d013eb25bd73773e306
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-8227
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2018-8227
cvssv3.1 7.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8227
generic_textual HIGH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8227
cvssv3.1 7.5 https://web.archive.org/web/20210124174712/http://www.securityfocus.com/bid/104368
generic_textual HIGH https://web.archive.org/web/20210124174712/http://www.securityfocus.com/bid/104368
cvssv3.1 7.5 https://web.archive.org/web/20210927135934/http://www.securitytracker.com/id/1041097
generic_textual HIGH https://web.archive.org/web/20210927135934/http://www.securitytracker.com/id/1041097
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-8227
https://github.com/chakra-core/ChakraCore
https://github.com/chakra-core/ChakraCore/commit/8af718902bfdc23bdce67d013eb25bd73773e306
https://web.archive.org/web/20210124174712/http://www.securityfocus.com/bid/104368
https://web.archive.org/web/20210927135934/http://www.securitytracker.com/id/1041097
http://www.securityfocus.com/bid/104368
http://www.securitytracker.com/id/1041097
CVE-2018-8227 https://nvd.nist.gov/vuln/detail/CVE-2018-8227
CVE-2018-8227 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8227
GHSA-gqh4-4r89-pr95 https://github.com/advisories/GHSA-gqh4-4r89-pr95
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/chakra-core/ChakraCore
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/chakra-core/ChakraCore/commit/8af718902bfdc23bdce67d013eb25bd73773e306
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-8227
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8227
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://web.archive.org/web/20210124174712/http://www.securityfocus.com/bid/104368
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://web.archive.org/web/20210927135934/http://www.securitytracker.com/id/1041097
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.95761
EPSS Score 0.21096
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:37:55.735982+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2018-8227.yml 38.6.0