Vulnerability Details CVE-2026-54998
Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 46.4%
CVSS Severity
CVSS v3 Score 8.8
Products affected by CVE-2026-54998
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cpe:2.3:a:microsoft:exchange_online:-