CVE-2026-118150 · Vendor
NO FIX YET
Microsoft Exchange Server has an authorization bypass caused by a user-controlled key, which lets an authorized attacker elevate privileges over the network. The sources give a CVSS score of 8.8 and do not describe exploitation in the wild.
first public Nov 10, 2026 · 1 source
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Organizations that run Microsoft Exchange Server on premises, where an authorized account could reach the flawed code over the network. Exchange Online customers are not described as affected by the sources. The sources do not name affected versions or configurations.
Not affected if exchange-online
Who cares exchange-server, on-prem-email, windows
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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