Insufficient verification of data authenticity in Windows App Client for Windows Desktop - CVE-2026-23656

 

Insufficient verification of data authenticity in Windows App Client for Windows Desktop - CVE-2026-23656

Published: March 10, 2026


Vulnerability identifier: #VU123698
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-23656
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Windows App Client for Windows Desktop

Detailed vulnerability description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient verification of data authenticity in Windows App Installer. A remote attacker can perform spoofing on the system.


How to mitigate CVE-2026-23656

Install updates from vendor's website.

Sources