Jan 2026: Microsoft Account Spoofing Vulnerability
CVE-2026-21264 Published on January 22, 2026
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.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-21264 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-21264
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Affected Versions
Microsoft Account Version - is affected by CVE-2026-21264Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.