PT-2026-47912 · Microsoft · Windows Server 2012+5

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-42987

Mitre

CVSS v3.1

8.1

High

Base vector

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

Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-42987

Affected Products

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016

Windows Server 2019

Windows Server 2022

Windows Server 2025

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42987 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42987 · Security Note