CVE-2026-48582
Received Received - Intake
Microsoft Exchange Online Privilege Escalation

Publication date: 2026-06-19

Last updated on: 2026-06-19

Assigner: Microsoft Corporation

Description
Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
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Meta Information
Published
2026-06-19
Last Modified
2026-06-19
Generated
2026-06-21
AI Q&A
2026-06-20
EPSS Evaluated
N/A
NVD
CVE-2026-48582
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft exchange_online *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
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Executive Summary

This vulnerability is a missing authorization issue in Microsoft Exchange Online. It allows an attacker who is already authorized to access the system to elevate their privileges over a network.

Impact Analysis

The vulnerability can have a severe impact because it allows an attacker with some level of access to increase their privileges significantly. According to the CVSS score of 9.6, it can lead to complete compromise of confidentiality and integrity of the affected system, although it does not affect availability.

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