--- title: "CVE-2018-8174: Out-of-bounds Write | CubePath" description: "A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka \"Windows VBScript Engine Remote Code…" language: en source: https://cubepath.com/security/cve/CVE-2018-8174 --- # CVE-2018-8174: Out-of-bounds Write | CubePath ## 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. Official description from the CVE record, published by microsoft. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-8174) ## Key data ### CVSS 3.1 High 7.5 Score published by CISA-ADP in the CVE record. CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | Metric | Value | What it means | | ---------------------- | --------- | ----------------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | High | The attack depends on conditions outside the attacker's control, so it takes preparation. | | Privileges required | None | No account or privileges are needed. | | User interaction | Required | A user has to do something first, such as opening a file or following a link. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | High | Serious or total effect on the trustworthiness of data. | | Availability impact | High | Serious or total effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.88243 (88.2% probability) Percentile 99.8% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Microsoft Windows VBScript Engine Out-of-Bounds Write Vulnerability Added to the catalog Feb 15, 2022 Federal due date Aug 15, 2022 Ransomware campaigns Known use ### CISA assessment as of Feb 14, 2022 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-787](https://cwe.mitre.org/data/definitions/787.html) Out-of-bounds Write ## Affected products Products listed in the CVE record, as the CNA published them. - Microsoft Windows 7 - affected: 32-bit Systems Service Pack 1 - affected: x64-based Systems Service Pack 1 - Microsoft Windows Server 2012 R2 - affected: (Server Core installation) - Microsoft Windows RT 8.1 - affected: Windows RT 8.1 - Microsoft Windows Server 2008 - affected: 32-bit Systems Service Pack 2 - affected: 32-bit Systems Service Pack 2 (Server Core installation) - affected: Itanium-Based Systems Service Pack 2 - affected: x64-based Systems Service Pack 2 - affected: x64-based Systems Service Pack 2 (Server Core installation) - Microsoft Windows Server 2012 - affected: (Server Core installation) - Microsoft Windows 8.1 - affected: 32-bit systems - affected: x64-based systems - Microsoft Windows Server 2016 - affected: (Server Core installation) - Microsoft Windows Server 2008 R2 - affected: Itanium-Based Systems Service Pack 1 - affected: x64-based Systems Service Pack 1 - affected: x64-based Systems Service Pack 1 (Server Core installation) - Microsoft Windows 10 - affected: 32-bit Systems - affected: Version 1607 for 32-bit Systems - affected: Version 1607 for x64-based Systems - affected: Version 1703 for 32-bit Systems - affected: Version 1703 for x64-based Systems - affected: Version 1709 for 32-bit Systems - affected: Version 1709 for x64-based Systems - affected: Version 1803 for 32-bit Systems - affected: Version 1803 for x64-based Systems - affected: x64-based Systems - Microsoft Windows 10 Servers - affected: version 1709 (Server Core Installation) - affected: version 1803 (Server Core Installation) ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [44741](https://www.exploit-db.com/exploits/44741/) (exploit-db.com) exploit - [blog.0patch.com/2018/05/a-single-instruction-micropatch-for…](https://blog.0patch.com/2018/05/a-single-instruction-micropatch-for.html) - [portal.msrc.microsoft.com/en-US/security-guidance/advisory/…](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8174) - [103998](http://www.securityfocus.com/bid/103998) (securityfocus.com) vdb-entry ## Timeline 1. ID reserved Mar 14, 2018 2. Record published May 9, 2018 3. Added to CISA KEV Feb 15, 2022 4. Record last updated Aug 13, 2026 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:34 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)