CVE-2026-21264

CVSS Score & Metrics

Base Score

9.3 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

January 22, 2026

Last Modified

January 26, 2026

CWE ID

CWE-79

Source

NVD

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21264

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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