MEDIUM Published October 13, 2026

CVE-2026-83656

Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.

CVSS base score

4.7 (v3.1)

Severity

MEDIUM

Attack vector

Local

Weakness

CWE-306

Last modified

October 29, 2026

CVSS vector

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

Affected products

microsoft windows 10 21h2 microsoft windows 10 22h2 microsoft windows 11 23h2 microsoft windows 11 24h2 microsoft windows 11 25h2 microsoft windows 11 26h1 microsoft windows 11 26h2 microsoft windows server 2022 microsoft windows server 2025

References

msrc.microsoft.com Vendor Advisory

View full NVD advisory →

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CVE-2026-83656

Affected products

References

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