CVE-2018-8174
Summary
| CVE | CVE-2018-8174 |
|---|---|
| State | PUBLISHED |
| Assigner | microsoft |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2018-05-09 19:29:02 UTC |
| Updated | 2026-08-13 05:17:19 UTC |
| Description | A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.885080000 probability, percentile 0.997600000 (date 2026-08-13)
CISA KEV: Listed on 2022-02-15; due 2022-08-15; ransomware use Known
Problem Types: CWE-787 | Remote Code Execution | CWE-787 CWE-787 Out-of-bounds Write
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | ADP | DECLARED | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.6 | AV:N/AC:H/Au:N/C:C/I:C/A:C |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
RequiredScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
HighAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:N/AC:H/Au:N/C:C/I:C/A:C
CISA Known Exploited Vulnerability
| Vendor | Microsoft |
|---|---|
| Product | Windows |
| Name | Microsoft Windows VBScript Engine Out-of-Bounds Write Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2018-8174 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Microsoft | Windows 10 1607 | - | All | All | All |
| Operating System | Microsoft | Windows 10 1703 | - | All | All | All |
| Operating System | Microsoft | Windows 10 1709 | - | All | All | All |
| Operating System | Microsoft | Windows 10 1803 | - | All | All | All |
| Operating System | Microsoft | Windows 7 | - | sp1 | All | All |
| Operating System | Microsoft | Windows 8.1 | - | All | All | All |
| Operating System | Microsoft | Windows Rt 8.1 | - | All | All | All |
| Operating System | Microsoft | Windows Server 2008 | - | sp2 | All | All |
| Operating System | Microsoft | Windows Server 2008 | r2 | sp1 | All | All |
| Operating System | Microsoft | Windows Server 2008 | r2 | sp1 | All | All |
| Operating System | Microsoft | Windows Server 2012 | - | All | All | All |
| Operating System | Microsoft | Windows Server 2012 | r2 | All | All | All |
| Operating System | Microsoft | Windows Server 2016 | - | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Microsoft | Windows 7 | affected 32-bit Systems Service Pack 1 | Not specified |
| CNA | Microsoft | Windows 7 | affected x64-based Systems Service Pack 1 | Not specified |
| CNA | Microsoft | Windows Server 2012 R2 | affected (Server Core installation) | Not specified |
| CNA | Microsoft | Windows RT 8.1 | affected Windows RT 8.1 | Not specified |
| CNA | Microsoft | Windows Server 2008 | affected 32-bit Systems Service Pack 2 | Not specified |
| CNA | Microsoft | Windows Server 2008 | affected 32-bit Systems Service Pack 2 (Server Core installation) | Not specified |
| CNA | Microsoft | Windows Server 2008 | affected Itanium-Based Systems Service Pack 2 | Not specified |
| CNA | Microsoft | Windows Server 2008 | affected x64-based Systems Service Pack 2 | Not specified |
| CNA | Microsoft | Windows Server 2008 | affected x64-based Systems Service Pack 2 (Server Core installation) | Not specified |
| CNA | Microsoft | Windows Server 2012 | affected (Server Core installation) | Not specified |
| CNA | Microsoft | Windows 8.1 | affected 32-bit systems | Not specified |
| CNA | Microsoft | Windows 8.1 | affected x64-based systems | Not specified |
| CNA | Microsoft | Windows Server 2016 | affected (Server Core installation) | Not specified |
| CNA | Microsoft | Windows Server 2008 R2 | affected Itanium-Based Systems Service Pack 1 | Not specified |
| CNA | Microsoft | Windows Server 2008 R2 | affected x64-based Systems Service Pack 1 | Not specified |
| CNA | Microsoft | Windows Server 2008 R2 | affected x64-based Systems Service Pack 1 (Server Core installation) | Not specified |
| CNA | Microsoft | Windows 10 | affected 32-bit Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1607 for 32-bit Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1607 for x64-based Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1703 for 32-bit Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1703 for x64-based Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1709 for 32-bit Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1709 for x64-based Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1803 for 32-bit Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected Version 1803 for x64-based Systems | Not specified |
| CNA | Microsoft | Windows 10 | affected x64-based Systems | Not specified |
| CNA | Microsoft | Windows 10 Servers | affected version 1709 (Server Core Installation) | Not specified |
| CNA | Microsoft | Windows 10 Servers | affected version 1803 (Server Core Installation) | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| Microsoft Internet Explorer VBScript Engine CVE-2018-8174 Arbitrary Code Execution Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8174 | af854a3a-2127-422b-91ae-364da2661108 | portal.msrc.microsoft.com | Patch, Vendor Advisory |
| 0patch Blog: Windows Updates Broke Your Networking? Free Micropatches To The Rescue (CVE-2018-8174) | af854a3a-2127-422b-91ae-364da2661108 | blog.0patch.com | Exploit, Technical Description, Third Party Advisory |
| Microsoft Internet Explorer 11 (Windows 7 x64/x86) - vbscript Code Execution | af854a3a-2127-422b-91ae-364da2661108 | www.exploit-db.com | Exploit, Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2022-02-15T00:00:00.000Z | CVE-2018-8174 added to CISA KEV |
There are currently no legacy QID mappings associated with this CVE.