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Description

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

PUBLISHED Reserved 2026-01-14 | Published 2026-03-10 | Updated 2026-03-13 | Assigner microsoft




MEDIUM: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C

Problem types

CWE-345: Insufficient Verification of Data Authenticity

Product status

1.00 (custom) before 2.0.964
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23656 (Windows App Installer Spoofing Vulnerability) vendor-advisory patch

cve.org (CVE-2026-23656)

nvd.nist.gov (CVE-2026-23656)

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