1. Home
  2. CVE Database
  3. CVE-2026-23656
MEDIUM · 5.9

CVE-2026-23656

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

Vulnerability Description

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

CVSS Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftWindows App< 2.0.964.0

Related Weaknesses (CWE)

CWE-345

References

FAQ

What is CVE-2026-23656?

CVE-2026-23656 is a vulnerability with a CVSS score of 5.9 (MEDIUM). Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.

How severe is CVE-2026-23656?

CVE-2026-23656 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-23656?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows App.