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

known ransomware use

Microsoft SMBv1 Remote Code Execution Vulnerability

Added to KEV
2022-02-10
Federal due date
2022-08-10
Vendor
Microsoft
Product
SMBv1
EPSS
99.8th percentile (score 0.898, as of 2026-09-16)
NVD CVSS v3.1
8.8 (HIGH)
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2017-0145

CISA short description

The SMBv1 server in multiple Microsoft Windows versions allows remote attackers to execute arbitrary code via crafted packets.

Required action

Apply updates per vendor instructions.

NVD description

The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows remote attackers to execute arbitrary code via crafted packets, aka "Windows SMB Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0143, CVE-2017-0144, CVE-2017-0146, and CVE-2017-0148.

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.