CVE-2026-23656
Windows App Installer Spoofing Vulnerability
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.
| Vendor | microsoft |
| Product | windows app client for windows desktop |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Mar 10, 2026 |
| Last Updated | Apr 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Windows App Client for Windows Desktop
1.00 < 2.0.964