9.3
/ 10
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Account allows an unauthorized attacker to perform spoofing over a network.
Basic Information
ID
MS:CVE-2026-21264
Published
Jan 22, 2026 at 08:00