PT-2026-47902 · Microsoft · Windows 11 Version 23H2+5

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-42974

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

Integer underflow (wrap or wraparound) in Windows Performance Monitor allows an unauthorized attacker to execute code over a network.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-42974

Affected Products

Windows 11 Version 23H2

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2022

Windows Server 2025

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42974 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42974 · Security Note