CVE-2017-0146
Published: March 25, 2022
Official Description
The SMBv1 server in Microsoft Windows allows remote attackers to perform remote code execution.
CISA KEV Advisory
Microsoft Windows SMB Remote Code Execution Vulnerability
The SMBv1 server in Microsoft Windows allows remote attackers to perform remote code execution.
Apply updates per vendor instructions.
Risk Analysis
The SMBv1 server in Microsoft Windows is vulnerable to remote code execution. This high-severity flaw, with an EPSS score of 0.93295 and inclusion in CISA's KEV, indicates a critical and actively exploited threat.
This vulnerability is actively being exploited in the wild. The remote nature of the attack vector makes it a highly accessible target for adversaries.
Administrators should disable SMBv1 and apply the latest security updates for Microsoft Windows. Implement network segmentation and restrict SMB access to trusted networks only.
Technical Analysis
CVE-2017-0146 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2017-0146 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-0146 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1