CVE-2026-48579

Microsoft Exchange Online Information Disclosure Vulnerability

CVSS 9.1 CRITICALEPSS 1.0%CWE-285

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.1EPSS 1.0%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

04 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Improper authorization in Microsoft Exchange Online allows an unauthorized attacker to disclose information over a network.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

Affected products

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References