CyberICT

CVE-2026-21264

Microsoft · Published January 22, 2026

CVSS v3.1

CRITICAL
Patch availableGet patch

Description

Microsoft Account Spoofing Vulnerability. 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

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C