known ransomware use

Microsoft Windows SMB Remote Code Execution Vulnerability

Added to KEV
2022-03-25
Federal due date
2022-04-15
Vendor
Microsoft
Product
Windows
EPSS
99.8th percentile (score 0.933, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2017-0146

CISA short description

The SMBv1 server in Microsoft Windows allows remote attackers to perform remote code execution.

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.