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Vulnerability details: VCID-wqmf-44en-bkhq
Vulnerability ID VCID-wqmf-44en-bkhq
Aliases CVE-2020-17054
GHSA-88cw-3m6x-49f7
Summary Improper Restriction of Operations within the Bounds of a Memory Buffer Chakra Scripting Engine Memory Corruption Vulnerability This CVE ID is unique from CVE-2020-17048.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
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
CWE-787 Out-of-bounds Write
System Score Found at
epss 0.01658 https://api.first.org/data/v1/epss?cve=CVE-2020-17054
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/pull/6528
generic_textual HIGH https://github.com/chakra-core/ChakraCore/pull/6528
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/pull/6528/commits/e81e8a51ec7ba3d0dfb6089254f166c2733216e1
generic_textual HIGH https://github.com/chakra-core/ChakraCore/pull/6528/commits/e81e8a51ec7ba3d0dfb6089254f166c2733216e1
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-17054
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2020-17054
cvssv3.1 7.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17054
generic_textual HIGH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17054
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-17054
https://github.com/chakra-core/ChakraCore/pull/6528
https://github.com/chakra-core/ChakraCore/pull/6528/commits/e81e8a51ec7ba3d0dfb6089254f166c2733216e1
CVE-2020-17054 https://nvd.nist.gov/vuln/detail/CVE-2020-17054
CVE-2020-17054 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17054
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/pull/6528
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/6528/commits/e81e8a51ec7ba3d0dfb6089254f166c2733216e1
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-2020-17054
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-2020-17054
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
2026-06-04T16:20:35.140484+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2020-17054.yml 38.6.0