MICROSOFT ACCOUNT SIGN-IN ASSISTANT · CVE-2026-119816 · Infrastructure
NO FIX YET
A heap-based buffer overflow in the Windows Microsoft Account Sign-in Assistant service lets an authorized local user raise their privileges. The sources do not give the affected Windows versions or a fixed build.
first public Nov 10, 2026 · 1 source
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Machines running Windows with the Microsoft Account Sign-in Assistant service present. An attacker needs a local account on the machine first. The sources do not list affected versions.
Not affected if no-local-untrusted-users
Who cares microsoft-account, windows
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Heap-based buffer overflow in Windows Microsoft Account Sign-in Assistant allows an authorized attacker to elevate privileges locally.
This page as .md · .json · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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