CVE-2018-8373 - Vulnerability Details

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.

Published: 2018-08-15

Score: 7.5 High

EPSS: 61.5% High

KEV: Yes

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Microsoft

Internet Explorer 9

affected

Version	Status	Constraints
`Windows Server 2008 for 32-bit Systems Service Pack 2`	affected	—
`Windows Server 2008 for x64-based Systems Service Pack 2`	affected	—

Microsoft

Internet Explorer 11

affected

Version	Status	Constraints
`Windows 10 for 32-bit Systems`	affected	—
`Windows 10 for x64-based Systems`	affected	—
`Windows 10 Version 1607 for 32-bit Systems`	affected	—
`Windows 10 Version 1607 for x64-based Systems`	affected	—
`Windows 10 Version 1703 for 32-bit Systems`	affected	—
`Windows 10 Version 1703 for x64-based Systems`	affected	—
`Windows 10 Version 1709 for 32-bit Systems`	affected	—
`Windows 10 Version 1709 for x64-based Systems`	affected	—
`Windows 10 Version 1803 for 32-bit Systems`	affected	—
`Windows 10 Version 1803 for x64-based Systems`	affected	—
`Windows 7 for 32-bit Systems Service Pack 1`	affected	—
`Windows 7 for x64-based Systems Service Pack 1`	affected	—
`Windows 8.1 for 32-bit systems`	affected	—
`Windows 8.1 for x64-based systems`	affected	—
`Windows RT 8.1`	affected	—
`Windows Server 2008 R2 for x64-based Systems Service Pack 1`	affected	—
`Windows Server 2012 R2`	affected	—
`Windows Server 2016`	affected	—

Microsoft

Internet Explorer 10

affected

Version	Status	Constraints
`Windows Server 2012`	affected	—

Configuration 1 [-]

AND

cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_10_1507:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1507:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_1607:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1607:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_1703:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1703:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_1709:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1709:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_1803:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1803:-::::::x86:
	cpe:2.3:o:microsoft:windows_7::sp1::::::*
	cpe:2.3:o:microsoft:windows_8.1::::::::
	cpe:2.3:o:microsoft:windows_rt_8.1::::::::
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
	cpe:2.3:o:microsoft:windows_server_2016:-:::::::*

Configuration 2 [-]

AND

cpe:2.3:a:microsoft:internet_explorer:10:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND

cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity High

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is in the KEV database since March 25, 2022.

The EPSS score is 0.61511.

Exploitation active

Automatable no

Technical Impact total

References

Link	Providers
http://www.securityfocus.com/bid/105037
http://www.securitytracker.com/id/1041483
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8373
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373

History

Wed, 22 Oct 2025 02:15:00 +0200

Type	Values Removed	Values Added
References		https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373

Tue, 21 Oct 2025 22:30:00 +0200

Type	Values Removed	Values Added
References	https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373

Tue, 21 Oct 2025 21:30:00 +0200

Type	Values Removed	Values Added
References		https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373

Wed, 16 Jul 2025 15:45:00 +0200

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.73833}`	epss `{'score': 0.73305}`

Tue, 10 Jun 2025 19:15:00 +0200

Type	Values Removed	Values Added
Metrics		kev `{'dateAdded': '2022-03-25'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 08 Apr 2025 18:15:00 +0200

Type	Values Removed	Values Added
First Time appeared		Microsoft windows 10 1507 Microsoft windows 10 1607 Microsoft windows 10 1703 Microsoft windows 10 1709 Microsoft windows 10 1803
CPEs	cpe:2.3:o:microsoft:windows_10:-:::::::* cpe:2.3:o:microsoft:windows_10:1607:::::::* cpe:2.3:o:microsoft:windows_10:1703:::::::* cpe:2.3:o:microsoft:windows_10:1709:::::::* cpe:2.3:o:microsoft:windows_10:1803:::::::*	cpe:2.3:o:microsoft:windows_10_1507:-::::::x64: cpe:2.3:o:microsoft:windows_10_1507:-::::::x86: cpe:2.3:o:microsoft:windows_10_1607:-::::::x64: cpe:2.3:o:microsoft:windows_10_1607:-::::::x86: cpe:2.3:o:microsoft:windows_10_1703:-::::::x64: cpe:2.3:o:microsoft:windows_10_1703:-::::::x86: cpe:2.3:o:microsoft:windows_10_1709:-::::::x64: cpe:2.3:o:microsoft:windows_10_1709:-::::::x86: cpe:2.3:o:microsoft:windows_10_1803:-::::::x64: cpe:2.3:o:microsoft:windows_10_1803:-::::::x86:
Vendors & Products	Microsoft windows 10	Microsoft windows 10 1507 Microsoft windows 10 1607 Microsoft windows 10 1703 Microsoft windows 10 1709 Microsoft windows 10 1803
Metrics	cvssV3_0 `{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}`

Fri, 07 Feb 2025 18:45:00 +0100

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}`

Subscriptions

Microsoft Internet Explorer Windows 10 1507 Windows 10 1607 Windows 10 1703 Windows 10 1709 Windows 10 1803 Windows 7 Windows 8.1 Windows Rt 8.1 Windows Server 2008 Windows Server 2012 Windows Server 2016

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2018-08-15T17:00:00.000Z

Updated: 2025-10-21T23:45:48.955Z

Reserved: 2018-03-14T00:00:00.000Z

Link: CVE-2018-8373

Vulnrichment

Updated: 2024-08-05T06:54:36.210Z

NVD

Status : Analyzed

Published: 2018-08-15T17:29:06.673

Modified: 2026-06-17T02:04:43.443

Link: CVE-2018-8373

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-787
Out-of-bounds Write

Tracking

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

Access Vector Network

Access Complexity High

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

Exploitation active

Automatable no

Technical Impact total

Subscriptions

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