PT-2026-58268 · Microsoft · Active Directory Domain Services

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-57976

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 in Active Directory Domain Services allows an authorized attacker to cause a denial of service over a network. A null pointer dereference occurs when a program attempts to read from or write to a memory address that is null, typically leading to a system crash.

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

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-57976

Affected Products

Active Directory Domain Services

References · 3

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57976 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-57976 · Security Note
• https://twitter.com/windowsforum/status/2077192710826377296 · Twitter Post