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ExploitedIn CISA KEVFix available

CVE-2018-8174

Exploitation confirmed. First attested on 2022-02-15 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2018-05-09
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2018-05-0919:29CVE publishedNVD
  2. 2018-05-21Exploit-DB entryExploit-DB
  3. 2022-02-15Added to the CISA KEV catalogCISA KEV
  4. 2022-02-15Listed as exploited by GCVEGCVE
  5. 2022-02-15Exploitation first reportedCISA KEV
  6. 2025-02-0716:26SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-8174?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-8174?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Microsoft windows server 2008
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows server 2012
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows 10 1607
BranchAffectedFixed in
—all versionsno fix published

7 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA10 products

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Windows 7
    Affected
    • = 32-bit Systems Service Pack 1no fix stated
    • = x64-based Systems Service Pack 1no fix stated
  • Microsoft Windows Server 2012 R2
    Affected
    • = (Server Core installation)no fix stated
  • Microsoft Windows RT 8.1
    Affected
    • = Windows RT 8.1no fix stated
  • Microsoft Windows Server 2008
    Affected
    • = 32-bit Systems Service Pack 2no fix stated
    • = 32-bit Systems Service Pack 2 (Server Core installation)no fix stated
    • = Itanium-Based Systems Service Pack 2no fix stated
    • = x64-based Systems Service Pack 2no fix stated
    • = x64-based Systems Service Pack 2 (Server Core installation)no fix stated
  • Microsoft Windows Server 2012
    Affected
    • = (Server Core installation)no fix stated
  • Microsoft Windows 8.1
    Affected
    • = 32-bit systemsno fix stated
    • = x64-based systemsno fix stated

4 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2018-08-21

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-08-15

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-44741
Exploit-DB
Proof-of-concept repositories
9 repositories, unverified0x09AL/CVE-2018-8174-msfYt1g3r/CVE-2018-8174_EXPSyFi/CVE-2018-8174orf53975/Rig-Exploit-for-CVE-2018-8174piotrflorczyk/cve-2018-8174_analysis
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-02-15
Patch Due Date
2022-08-15
Ransomware Use
Known
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2018-05-09
Last Modified
2026-08-13
NVD status
Analyzed
GitHub Advisory
GHSA-5cv8-848m-hmm2

Frequently asked questions

What is CVE-2018-8174?

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.

Is CVE-2018-8174 actively exploited?

Yes. CVE-2018-8174 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-08-15.

What is the CVSS score for CVE-2018-8174?

CVE-2018-8174 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Sources for this record