Vulnerability Details CVE-2026-54130
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 39.2%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2026-54130
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cpe:2.3:a:microsoft:365_copilot:-