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Vulnerability details: VCID-rbpf-56qy-gfgd
Vulnerability ID VCID-rbpf-56qy-gfgd
Aliases CVE-2020-0767
GHSA-fhc8-h6hr-h9mq
Summary Improper Restriction of Operations within the Bounds of a Memory Buffer A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory.
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-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.42191 https://api.first.org/data/v1/epss?cve=CVE-2020-0767
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/pull/6375
generic_textual HIGH https://github.com/chakra-core/ChakraCore/pull/6375
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/pull/6375/commits/161c8957913ffb48bddef4423998b2eb642f35b3
generic_textual HIGH https://github.com/chakra-core/ChakraCore/pull/6375/commits/161c8957913ffb48bddef4423998b2eb642f35b3
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-0767
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2020-0767
cvssv3.1 7.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0767
generic_textual HIGH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0767
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-0767
https://github.com/chakra-core/ChakraCore
https://github.com/chakra-core/ChakraCore/pull/6375
https://github.com/chakra-core/ChakraCore/pull/6375/commits/161c8957913ffb48bddef4423998b2eb642f35b3
CVE-2020-0767 https://nvd.nist.gov/vuln/detail/CVE-2020-0767
CVE-2020-0767 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0767
No exploits are available.
Vector: CVSS:3.1/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:3.1/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/6375
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:3.1/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/6375/commits/161c8957913ffb48bddef4423998b2eb642f35b3
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:3.1/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-2020-0767
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:3.1/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-2020-0767
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 0.97516
EPSS Score 0.42191
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:19:47.169330+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2020-0767.yml 38.6.0