PT-2026-87637 · Microsoft · Exchange Server 2016 Cumulative Update 23+3

CVE-2026-69641

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Published

2026-09-08

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Updated

2026-09-08

CVSS v3.1

9.1

Critical

VectorAV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Fix

Missing Authorization

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Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-69641

Affected Products

Exchange Server 2016 Cumulative Update 23
Exchange Server 2019 Cumulative Update 14
Exchange Server 2019 Cumulative Update 15
Exchange Server Subscription Edition Rtm