CVE-2019-0703: Microsoft Windows SMB Information Disclosure Vulnerability

Medium severity, CVSS 6.5. Actively exploited: in CISA KEV since 2022-05-23. EPSS: 9.6% chance of exploitation in the next 30 days.

An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0704, CVE-2019-0821.

Affected products

• Microsoft Windows 10 1507: affected versions not specified
• Microsoft Windows 10 1607: affected versions not specified
• Microsoft Windows 10 1703: affected versions not specified
• Microsoft Windows 10 1709: affected versions not specified
• Microsoft Windows 10 1803: affected versions not specified
• Microsoft Windows 10 1809: affected versions not specified
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 1709: affected versions not specified
• Microsoft Windows Server 1803: affected versions not specified
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: affected versions not specified
• Microsoft Windows Server 2019: affected versions not specified

Published 2019-04-09. Last modified 2026-06-17.