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Vulnerability details: VCID-3uhm-u79b-wkcq
Vulnerability ID VCID-3uhm-u79b-wkcq
Aliases CVE-2018-8588
GHSA-8f4c-h6m3-22rw
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-2018-8541, CVE-2018-8542, CVE-2018-8543, CVE-2018-8551, CVE-2018-8555, CVE-2018-8556, CVE-2018-8557.
Status Published
Exploitability None
Weighted Severity None
Risk None
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 0.179 https://api.first.org/data/v1/epss?cve=CVE-2018-8588
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-8f4c-h6m3-22rw
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/commit/c76da44c27fcf06ad5ac3ee6f8d45efb8d8bc04f
generic_textual HIGH https://github.com/chakra-core/ChakraCore/commit/c76da44c27fcf06ad5ac3ee6f8d45efb8d8bc04f
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/pull/5827
generic_textual HIGH https://github.com/chakra-core/ChakraCore/pull/5827
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-8588
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2018-8588
cvssv3.1 7.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8588
generic_textual HIGH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8588
cvssv3.1 7.5 https://web.archive.org/web/20210124214051/http://www.securityfocus.com/bid/105782
generic_textual HIGH https://web.archive.org/web/20210124214051/http://www.securityfocus.com/bid/105782
cvssv3.1 7.5 https://web.archive.org/web/20211126224439/http://www.securitytracker.com/id/1042107
generic_textual HIGH https://web.archive.org/web/20211126224439/http://www.securitytracker.com/id/1042107
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-8588
https://github.com/chakra-core/ChakraCore/commit/c76da44c27fcf06ad5ac3ee6f8d45efb8d8bc04f
https://github.com/chakra-core/ChakraCore/pull/5827
https://web.archive.org/web/20210124214051/http://www.securityfocus.com/bid/105782
https://web.archive.org/web/20211126224439/http://www.securitytracker.com/id/1042107
http://www.securityfocus.com/bid/105782
http://www.securitytracker.com/id/1042107
CVE-2018-8588 https://nvd.nist.gov/vuln/detail/CVE-2018-8588
CVE-2018-8588 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8588
GHSA-8f4c-h6m3-22rw https://github.com/advisories/GHSA-8f4c-h6m3-22rw
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/commit/c76da44c27fcf06ad5ac3ee6f8d45efb8d8bc04f
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/pull/5827
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-2018-8588
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-2018-8588
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/20210124214051/http://www.securityfocus.com/bid/105782
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/20211126224439/http://www.securitytracker.com/id/1042107
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 0.9526
EPSS Score 0.179
Published At May 30, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-30T20:54:31.314571+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2018-8588.yml 38.6.0