Applied Cybernetics Group
Threat intel → detection pipeline
Friday, September 18, 2026
Data as of 13:09 UTC

Microsoft Windows Shell Remote Code Execution Vulnerability

Added to KEV
2022-03-25
Federal due date
2022-04-15
Vendor
Microsoft
Product
Windows
EPSS
99.5th percentile (score 0.740, as of 2026-09-16)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2018-8414

CISA short description

A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.