CVE-2019-1273: Microsoft Windows 10

Medium severity, CVSS 5.4. EPSS: 1.5% chance of exploitation in the next 30 days.

A cross-site-scripting (XSS) vulnerability exists when Active Directory Federation Services (ADFS) does not properly sanitize certain error messages, aka 'Active Directory Federation Services XSS Vulnerability'.

Affected products

• Microsoft Windows 10: version 1803 only; version 1809 only; version 1903 only
• Microsoft Windows Server 2016: version 1803 only; version 1903 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2019-09-11. Last modified 2026-06-17.