PT-2026-58348 · Microsoft · Active Directory Domain Services

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-50366

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Active Directory Domain Services (affected versions not specified)

Description A null pointer dereference—a condition where a program attempts to read a memory location that is null—exists in Active Directory Domain Services. This allows an authorized attacker to cause a denial of service over a network, potentially knocking a domain controller offline.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-50366

Affected Products

Active Directory Domain Services

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-50366 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50366 · Vendor Advisory
• https://twitter.com/windowsforum/status/2077287092124516750 · Twitter Post