CVE-2026-21264: critical vulnerability in Microsoft Account
Microsoft Account Spoofing Vulnerability
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.4%
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Account allows an unauthorized attacker to perform spoofing over a network.
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
Affected products
Microsoft · Microsoft AccountRelated CVEs — Microsoft Account
In the same product, most dangerous first.