Disclosure summary
Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.
Source-reported weakness categories
CWE-345
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Mar
Open original source · Updated Mar 10, 2026
Windows App Installer Spoofing Vulnerability
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 5.9
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | Windows App Client for Windows Desktop | (MSRC status code 3) |
Vendor remediation references
- Vendor guidance · build 2.0.964 · product IDs 12457
- Vendor guidance · product IDs 12457
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-03-10T03:00:00-04:00
MODIFIED 2026-03-10T03:00:00-04:00
INGESTED 2026-10-08T12:45:09-04:00