CVE-2026-85801 · Infrastructure
NO FIX YET
A use-after-free flaw in the Windows Local Security Authority Subsystem Service (LSASS) lets an attacker who already has an account on the machine raise their privileges. The sources give a CVSS score of 7.8 and say the attack is local.
first public Nov 10, 2026 · 1 source
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Windows machines running the LSASS service, which is present on every Windows install, so any system where an untrusted or low-privilege user can log on is in scope. The sources do not list affected Windows builds or say whether a non-default configuration is needed. Systems where only trusted administrators log on carry less risk.
Not affected if no-local-untrusted-users
Who cares endpoints, lsass, windows
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Use after free in Windows Local Security Authority Subsystem Service (LSASS) 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
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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