CVE-2018-8174

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.882 · 100 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 9 exploits · PoC

Likely / severe?

88.2% (100th) EPSS

CVSS 7.6 · high

Is it mine?

60 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

added 2022-02-15remediate by 2022-08-15

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Microsoft Windows VBScript Engine Out-of-Bounds Write Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.6

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.6highAV:N/AC:H/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 4.9 · impact 10

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.6 · impact 5.9

v3.17.5highAV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondaryexploitability 1.6 · impact 5.9

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119US

exploits (9)

Public proof-of-concept and weaponised exploit code.

EDB-44741Microsoft Internet Explorer 11 (Windows 7 x86/x64) - vbscript Code ExecutionPoC · exploit_db
0x09AL/CVE-2018-8174-msfCVE-2018-8174 - VBScript memory corruption exploit.PoC · poc_in_github
SyFi/CVE-2018-8174MS Word MS WordPad via IE VBS Engine RCE PoC · poc_in_github
Yt1g3r/CVE-2018-8174_EXPCVE-2018-8174_pythonPoC · poc_in_github
ericisnotrealname/CVE-2018-8174_EXPericisnotrealname/CVE-2018-8174_EXPPoC · poc_in_github
likekabin/CVE-2018-8174-msflikekabin/CVE-2018-8174-msfPoC · poc_in_github

affected products (60)

Products and version ranges known to be affected.

Microsoft Windows 10≤ 32-bit Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1803 for 32-bit Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1803 for x64-based Systemsenisa_euvdEU
Microsoft Windows 10≤ x64-based Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1607 for 32-bit Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1709 for 32-bit Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1703 for x64-based Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1703 for 32-bit Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1709 for x64-based Systemsenisa_euvdEU
Microsoft Windows 10≤ Version 1607 for x64-based Systemsenisa_euvdEU
Microsoft Windows 10 Servers≤ version 1803 (Server Core Installation)enisa_euvdEU
Microsoft Windows 10 Servers≤ version 1709 (Server Core Installation)enisa_euvdEU
Microsoft Windows 7≤ 32-bit Systems Service Pack 1enisa_euvdEU
Microsoft Windows 7≤ x64-based Systems Service Pack 1enisa_euvdEU
Microsoft Windows 8.1≤ x64-based systemsenisa_euvdEU
Microsoft Windows 8.1≤ 32-bit systemsenisa_euvdEU
Microsoft Windows RT 8.1≤ Windows RT 8.1enisa_euvdEU
Microsoft Windows Server 2008≤ 32-bit Systems Service Pack 2 (Server Core installation)enisa_euvdEU
Microsoft Windows Server 2008≤ Itanium-Based Systems Service Pack 2enisa_euvdEU
Microsoft Windows Server 2008≤ 32-bit Systems Service Pack 2enisa_euvdEU

showing 20 of 60

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2018-05-09modified 2026-08-13

related (16,124)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-86950US	—OT critical	26.2% (98th)	KEV	2026-09-28
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1,…
CVE-2026-87491US	—OT critical	3.51% (89th)	KEV	2026-09-09
Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security…
CVE-2026-53362US	—OT critical	0.71% (53rd)	KEV	2026-07-04
In the Linux kernel, the following vulnerability has been resolved: ipv6: account for fraggap on the paged allocation path In __ip6_append_data(), when the paged-allocation branc…
CVE-2026-53266US	—OT critical	0.93% (61st)	KEV	2026-06-25
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: make ebt_snat ARP rewrite writable The ebtables SNAT target keeps the Ethernet source addre…
CVE-2026-11645US	—OT critical	2.44% (84th)	KEV	2026-06-09
Out of bounds read and write in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium…

+16119 more

references (14)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan