CVE-2026-121681 · Infrastructure
NO FIX YET
Microsoft Trace Data Helper has a heap-based buffer overflow. A local user with some access can use it to elevate their privileges on the machine.
first public Nov 10, 2026 · 1 source
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Affects Windows machines running Microsoft Trace Data Helper; the sources do not say which versions or configurations are vulnerable. Exposure requires an attacker who already has an authorized local account. Systems without that component or with no local untrusted users are lower risk.
Not affected if no-local-untrusted-users
Who cares microsoft, windows
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Heap-based buffer overflow in Microsoft Trace Data Helper 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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