PT-2026-47889 · Microsoft · Windows 11 Version 24H2+3

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-42910

Mitre

CVSS v3.1

7.8

High

Base vector

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

Out-of-bounds write in Windows Hotpatch Monitoring Service allows an authorized attacker to elevate privileges locally.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-42910

Affected Products

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2025

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-42910 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42910 · Vendor Advisory