CVE-2017-0146: Microsoft Windows SMB Remote Code Execution Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
The SMBv1 server in Microsoft Windows allows remote attackers to perform remote code execution.
CSIRTS triage
- What
- The SMBv1 server in Microsoft Windows allows remote attackers to perform remote code execution.
- Who is affected
- Deployments of Microsoft Windows with SMBv1 enabled.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Disable SMBv1 or apply the latest security patches.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-0146
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2017-0146Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2017-0146 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Microsoft Windows SMB
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalexploitedCVE-2025-33073: Microsoft Windows SMB Client Improper Access Control Vulnerabilitycisa-kev · 2025-10-20
- criticalexploitedCVE-2019-0703: Microsoft Windows SMB Information Disclosure Vulnerabilitycisa-kev · 2022-05-23
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