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Vulnerability details: VCID-4gds-1a3w-mbaf
Vulnerability ID VCID-4gds-1a3w-mbaf
Aliases CVE-2019-1139
GHSA-9qw8-ccq9-ffj9
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 CVE ID is unique from CVE-2019-1131, CVE-2019-1140, CVE-2019-1141, CVE-2019-1195, CVE-2019-1196, CVE-2019-1197.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-787 Out-of-bounds Write
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.01327 https://api.first.org/data/v1/epss?cve=CVE-2019-1139
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/commit/6b1250b6ffea7006226dd937e52cf5b353fcfc15
generic_textual HIGH https://github.com/chakra-core/ChakraCore/commit/6b1250b6ffea7006226dd937e52cf5b353fcfc15
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/commit/ae8a8d9644e677a9878e5dd7824d4b876454e799
generic_textual HIGH https://github.com/chakra-core/ChakraCore/commit/ae8a8d9644e677a9878e5dd7824d4b876454e799
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-1139
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2019-1139
cvssv3.1 7.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1139
generic_textual HIGH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1139
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-1139
https://github.com/chakra-core/ChakraCore/commit/6b1250b6ffea7006226dd937e52cf5b353fcfc15
https://github.com/chakra-core/ChakraCore/commit/ae8a8d9644e677a9878e5dd7824d4b876454e799
CVE-2019-1139 https://nvd.nist.gov/vuln/detail/CVE-2019-1139
CVE-2019-1139 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1139
GHSA-9qw8-ccq9-ffj9 https://github.com/advisories/GHSA-9qw8-ccq9-ffj9
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/6b1250b6ffea7006226dd937e52cf5b353fcfc15
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/ae8a8d9644e677a9878e5dd7824d4b876454e799
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-2019-1139
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-2019-1139
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 0.80264
EPSS Score 0.01327
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:20:57.640790+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2019-1139.yml 38.6.0