CVE-2026-48579

critical Microsoft
CVSS v3 Base Score
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score
0.1%
Exploitation probability in 30 days
Top 72% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Published: June 4, 2026 (35 days ago)
Last Modified: June 5, 2026
Vendor: Microsoft
Source: NVD

Description

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

CWE

CWE-285

Affected Products

microsoft exchange online

References

🔗 msrc.microsoft.com