9.3

CVE-2018-8414: Microsoft Windows Shell Remote Code Execution Vulnerability

CVSS: 9.3v2.0HighKEVAnalyzed
Published 15-08-2018Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2018-8414 is a high (CVSS 9.3) Improper Input Validation vulnerability in Microsoft Windows. It is known to be exploited: CISA lists it, first on 25-03-2022. EPSS estimates a 72.91% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
72.91%
0%100%
Critical · -1.06 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-08-2018
    PublishedVulnerability first disclosed.
  2. 25-03-2022
    Added to CISA KEVMicrosoft Windows Shell Remote Code Execution Vulnerability
  3. 15-04-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka "Windows Shell Remote Code Execution Vulnerability." This affects Windows 10 Servers, Windows 10.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

72.91%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

-1.06 pp

From 73.97% on 19-09-2026

19-09-202619-10-2026
EPSS score
72.91%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
25-03-2022
Federal due date
15-04-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2018-8414

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft7 products
  • windows_10Version 1703 for 32-bit Systems | Version 1703 for x64-based Systems | Version 1709 for 32-bit Systems | Version 1709 for x64-based Systems | Version 1803 for 32-bit Systems | Version 1803 for x64-based Systems
  • windows_10_1703na
  • windows_10_1709na
  • windows_10_1803na
  • windows 10 serversversion 1709 (Server Core Installation) | version 1803 (Server Core Installation)

1 vendor · 7 products

References

4 links