CVE-2017-0144VulnerabilityPublished 02/10/2022Updated 10/24/2026

CVE-2017-0144: Microsoft SMBv1 Remote Code Execution Vulnerability

Affects Microsoft SMBv1Source CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 02/10/2022
KEV deadline: 08/10/2022
Ransomware: Used in ransomware campaigns
EPSS: 99.2% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2017-0144 (opens in a new tab)

Description

CVE-2017-0144 is a remote code execution vulnerability in the SMBv1 server component of multiple Microsoft Windows versions. It allows remote attackers to execute arbitrary code by sending specially crafted packets. This vulnerability has been exploited in the wild and is known to have been used in ransomware campaigns.

Summary

The SMBv1 server in multiple Microsoft Windows versions contains a vulnerability that permits remote attackers to execute arbitrary code via crafted network packets. This flaw enables attackers to gain control of affected systems remotely. It has been actively exploited in the wild, including use in ransomware attacks, highlighting its critical impact on affected environments.

Impact

Successful exploitation allows remote attackers to execute arbitrary code on vulnerable Windows systems, potentially leading to full system compromise. This has been demonstrated in active ransomware campaigns, indicating significant operational and data security risks.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or official remediation details are provided, users should consult Microsoft's security advisories for updates. Disabling SMBv1 or applying available security updates from Microsoft is generally recommended to mitigate this vulnerability.

Weaknesses

CWE-20Improper Input Validation (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 10:11:05 UTC

Weaknesses

References

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