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Vulnerability details: VCID-yb1f-mred-tyc8
Vulnerability ID VCID-yb1f-mred-tyc8
Aliases CVE-2020-1180
GHSA-wc43-7wj6-4ggr
Summary Out-of-bounds Write A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2020-1057, CVE-2020-1172.
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 0.01658 https://api.first.org/data/v1/epss?cve=CVE-2020-1180
cvssv3.1 7.5 https://github.com/microsoft/ChakraCore/pull/6500
generic_textual HIGH https://github.com/microsoft/ChakraCore/pull/6500
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-1180
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2020-1180
cvssv3.1 7.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1180
generic_textual HIGH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1180
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-1180
https://github.com/microsoft/ChakraCore/pull/6500
CVE-2020-1180 https://nvd.nist.gov/vuln/detail/CVE-2020-1180
CVE-2020-1180 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1180
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/microsoft/ChakraCore/pull/6500
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-2020-1180
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-2020-1180
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 0.8239
EPSS Score 0.01658
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:20:25.163306+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2020-1180.yml 38.6.0