CVE-2018-8174

Microsoft Windows — Microsoft Windows VBScript Engine Out-of-Bounds Write Vulnerability
⚠️ CVSS 3.1  7.5 / 10 — HIGH 🔴 CISA Known Exploited Vulnerability

Overview

A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution"

https://nvd.nist.gov/vuln/detail/CVE-2018-8174

Key Details

PropertyValue
CVE ID CVE-2018-8174
Vendor / Product Microsoft — Windows
NVD Published2018-05-09
NVD Last Modified2025-10-28
CVSS 3.1 Score7.5
CVSS 3.1 VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SeverityHIGH
CWE CWE-787
CISA KEV Added2022-02-15
CISA KEV Deadline2022-08-15
Known Ransomware Use ⚠️ Yes

CVSS 3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Required Action

CISA BOD 22-01 Deadline: 2022-08-15. Apply updates per vendor instructions.

Timeline

DateEvent
2022-02-15Added to CISA Known Exploited Vulnerabilities catalog
2022-08-15CISA BOD 22-01 remediation deadline

References

ResourceType
NVD — CVE-2018-8174 Vulnerability Database
CISA KEV Catalog Entry US Government