Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-j42w-gmza-vuaj
Vulnerability ID VCID-j42w-gmza-vuaj
Aliases CVE-2019-0923
GHSA-h23m-w6x5-jwr4
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-2019-0912, CVE-2019-0913, CVE-2019-0914, CVE-2019-0915, CVE-2019-0916, CVE-2019-0917, CVE-2019-0922, CVE-2019-0924, CVE-2019-0925, CVE-2019-0927, CVE-2019-0933, CVE-2019-0937.
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 0.07154 https://api.first.org/data/v1/epss?cve=CVE-2019-0923
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/commit/972584709518380a4a3c2410b5fa151f6f0239b1
generic_textual HIGH https://github.com/chakra-core/ChakraCore/commit/972584709518380a4a3c2410b5fa151f6f0239b1
cvssv3.1 7.5 https://github.com/chakra-core/ChakraCore/commit/d797e3f00e34c12c8c0ae52f56344325439dccd7
generic_textual HIGH https://github.com/chakra-core/ChakraCore/commit/d797e3f00e34c12c8c0ae52f56344325439dccd7
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-0923
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2019-0923
cvssv3.1 7.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0923
generic_textual HIGH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0923
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-0923
https://github.com/chakra-core/ChakraCore/commit/972584709518380a4a3c2410b5fa151f6f0239b1
https://github.com/chakra-core/ChakraCore/commit/d797e3f00e34c12c8c0ae52f56344325439dccd7
CVE-2019-0923 https://nvd.nist.gov/vuln/detail/CVE-2019-0923
CVE-2019-0923 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0923
GHSA-h23m-w6x5-jwr4 https://github.com/advisories/GHSA-h23m-w6x5-jwr4
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/972584709518380a4a3c2410b5fa151f6f0239b1
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/d797e3f00e34c12c8c0ae52f56344325439dccd7
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-2019-0923
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-2019-0923
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 0.91709
EPSS Score 0.07154
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:20:58.018110+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2019-0923.yml 38.6.0