WINDOWS MANAGEMENT INSTRUMENTATION · CVE-2026-105503 · Infrastructure
NO FIX YET
A heap-based buffer overflow in Windows Management Instrumentation can be triggered by an authorized local user. An attacker who already has a login on the machine can use it to elevate their privileges.
first public Nov 10, 2026 · 1 source
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Affects Windows machines where a local user already has an account, since the flaw is triggered locally by an authorized attacker. Systems where only trusted administrators log in are lower exposure. The sources do not say which Windows builds are affected or which updates fix it.
Not affected if no-local-users
Who cares windows, wmi
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
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