CVE-2026-85833

7.8High

Published 13 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash

7.8High

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-416

Impact

Local authenticated attackers can elevate privileges to SYSTEM or administrator on Windows devices. They require existing local code execution with low-level user privileges to exploit it.

Root cause

A use-after-free bug in the Windows Modern Device Management (MDM) component improperly references memory after it has been freed.

Affected systems

Versions not listed — check the vendor advisory.

CVSS v3.1 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Fix & remediation

Install the latest Microsoft security update addressing this CVE from the vendor advisory. If patching must wait, restrict standard user access and isolate affected endpoints since no vendor workaround is provided.

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85833

Source: nvd.nist.gov/vuln/detail/CVE-2026-85833