Detections
Analytics

KB5087544: Windows 10 version 21H2 / Windows 10 Version 22H2 Security Update (May 2026)

high Nessus Plugin ID 314353

Synopsis

The remote Windows host is affected by multiple vulnerabilities.

Description

The remote Windows host is missing security update 5087544. It is, therefore, affected by multiple vulnerabilities

 - Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over an adjacent network. (CVE-2026-34329)

 - Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
 (CVE-2026-40403)

 - Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
 (CVE-2026-40415)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Apply Security Update 5087544

See Also

https://support.microsoft.com/help/5087544

Plugin Details

Severity: High

ID: 314353

File Name: smb_nt_ms26_may_5087544.nasl

Version: 1.1

Type: Local

Agent: windows

Published: 5/12/2026

Updated: 5/12/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-34329

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-40403

Vulnerability Information

CPE: cpe:/o:microsoft:windows_10_22h2, cpe:/o:microsoft:windows_10_21h2

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 5/12/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2025-54518, CVE-2026-21530, CVE-2026-32161, CVE-2026-32170, CVE-2026-32209, CVE-2026-33834, CVE-2026-33835, CVE-2026-33837, CVE-2026-33838, CVE-2026-33839, CVE-2026-33841, CVE-2026-34329, CVE-2026-34330, CVE-2026-34331, CVE-2026-34333, CVE-2026-34334, CVE-2026-34336, CVE-2026-34337, CVE-2026-34338, CVE-2026-34339, CVE-2026-34340, CVE-2026-34341, CVE-2026-34342, CVE-2026-34343, CVE-2026-34344, CVE-2026-34345, CVE-2026-34347, CVE-2026-34351, CVE-2026-35415, CVE-2026-35416, CVE-2026-35417, CVE-2026-35418, CVE-2026-35421, CVE-2026-35422, CVE-2026-35423, CVE-2026-35424, CVE-2026-40377, CVE-2026-40380, CVE-2026-40382, CVE-2026-40397, CVE-2026-40398, CVE-2026-40399, CVE-2026-40401, CVE-2026-40403, CVE-2026-40406, CVE-2026-40407, CVE-2026-40408, CVE-2026-40410, CVE-2026-40413, CVE-2026-40414, CVE-2026-40415, CVE-2026-41088, CVE-2026-41097, CVE-2026-42825

MSFT: MS26-5087544

MSKB: 5087544