CVE-2026-23656

MEDIUM

Windows App Installer < 2.0.964.0 - Unauthenticated Spoofing via Insufficient Data Verification

Title source: llm
STIX 2.1

Description

Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.

References (1)

Core 1
Core References

Scores

CVSS v3 5.9
EPSS 0.0030
EPSS Percentile 21.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-345
Status published
Products (2)
Microsoft/Windows App Client for Windows Desktop 1.00 - 2.0.964
microsoft/windows_app < 2.0.964.0
Published Mar 10, 2026
Tracked Since Mar 11, 2026