---
id: CVE-2026-69641
title: >-
  Missing authorization in Microsoft Exchange Server allows an authorized
  attacker to elevate privileges over a network.
summary: >-
  Missing authorization in Microsoft Exchange Server allows an authorized
  attacker to elevate privileges over a network.
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-862
vendor: microsoft
product: exchange_server
affected:
  - exchange_server = 2016
  - exchange_server = 2019
  - exchange_server_subscription_edition < 15.02.2562.049
patched:
  - exchange_server_subscription_edition 15.02.2562.049
published: '2026-09-08'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T12:23:27.440'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69641'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69641'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00848
epssPercentile: 0.56574
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T04:20:17.994626Z'
ingestedAt: '2026-09-08T19:08:49.617Z'
---

## Overview

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

## Affected

- `exchange_server = 2016`
- `exchange_server = 2019`
- `exchange_server_subscription_edition < 15.02.2562.049`

## Remediation

Upgrade past the affected range:

- `exchange_server_subscription_edition 15.02.2562.049`