Missing Authorization in Microsoft Exchange Server

Publication date: 2026-09-08

Last updated on: 2026-09-22

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-22

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69641

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2019
microsoft	exchange_server_subscription_edition	to 15.02.2562.049 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

This vulnerability is a missing authorization issue in Microsoft Exchange Server. An authorized attacker can exploit it over a network to elevate their privileges, gaining higher access than intended.

Impact Analysis

An attacker could gain elevated privileges, allowing them to access sensitive data, modify system configurations, or perform unauthorized actions on the Exchange Server.

Mitigation Strategies

Apply the latest security updates from Microsoft for Exchange Server as soon as possible to address the missing authorization issue.

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