Microsoft SMBv1 Server Remote Code Execution Vulnerability

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

Published 19 Oct 2026Updated 19 Oct 202638 sources
CVSS 9.3 ✓ VERIFIED REFERENCE△ CISA KEV

Source timeline

Discovered through CISA Known Exploited VulnerabilitiesView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗