MEDIUM Published October 13, 2026

CVE-2026-83648

Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.

CVSS base score

6.5 (v3.1)

Severity

MEDIUM

Attack vector

Network

Weakness

CWE-476

Last modified

October 29, 2026

CVSS vector

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

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-2026-83648

Affected products

References

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