Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Microsoft Microsoft Exchange Online affected
Version Status Constraints
- affected —

No data.

No data.

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No data.

Project Subscriptions

Vendors Products
Microsoft Subscribe
Exchange Online Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48582 cve-icon
History

Fri, 19 Jun 2026 21:15:00 +0000

Type Values Removed Values Added
Description Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Title Microsoft Exchange Online Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft exchange Online
Weaknesses CWE-862
CPEs cpe:2.3:a:microsoft:exchange_online:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft exchange Online
References
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-06-19T20:29:41.615Z

Reserved: 2026-05-21T20:00:35.246Z

Link: CVE-2026-48582

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-19T22:30:05Z

Weaknesses