Security Updates for Windows App Client for Windows Desktop (June 2026)

high Nessus Plugin ID 324977

Synopsis

The Windows app installed on the remote host is affected by multiple vulnerabilities.

Description

The Windows app installed on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

- Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.
(CVE-2026-42908)

- Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
(CVE-2026-42909)

- Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
(CVE-2026-42985)

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

Solution

Microsoft has released a security update, please review the vendor advisory.

Plugin Details

Severity: High

ID: 324977

File Name: smb_nt_ms26_jun_windows_app_client.nasl

Version: 1.2

Type: Local

Agent: windows

Family: Windows : Microsoft Bulletins

Published: 7/3/2026

Updated: 7/6/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.9

Percentile: 99.36

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-47289

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS Score Source: CVE-2026-45639

Vulnerability Information

CPE: cpe:/a:microsoft:windows_app

Required KB Items: SMB/Registry/Enumerated, WMI/Windows App Store/Enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 6/9/2026

Vulnerability Publication Date: 6/9/2026

Reference Information

CVE: CVE-2026-42908, CVE-2026-42909, CVE-2026-42985, CVE-2026-42992, CVE-2026-44799, CVE-2026-44801, CVE-2026-45639, CVE-2026-47289

CWE: 122, 125, 362, 416

Detections

Analytics