PT-2026-48102 · Microsoft · Windows 10 Version 1809+9

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-48563

NVD

CVSS v3.1

7.5

High

Base vector

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

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-48563

Affected Products

Windows 10 Version 1809

Windows 10 Version 21H2

Windows 10 Version 22H2

Windows 11 Version 23H2

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2019

Windows Server 2022

Windows Server 2025

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-48563 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48563 · Vendor Advisory