CVE-2026-21264: Microsoft Account

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Account allows an unauthorized attacker to perform spoofing over a network.

Affected products

• Microsoft Account: affected versions not specified

Published 2026-01-22. Last modified 2026-06-17.