Disclosure summary
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
Source-reported weakness categories
CWE-347
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-Apr
Open original source · Updated Apr 28, 2026
ASP.NET Core Elevation of Privilege Vulnerability
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 9.1
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | ASP.NET Core 10.0 | (MSRC status code 3) |
| Microsoft update guide | Microsoft Visual Studio 2026 version 18.5 | (MSRC status code 3) |
Vendor remediation references
- 5091596 · build 10.0.7 · product IDs 20932
- Vendor guidance · product IDs 20932
- Release Notes · build 18.5.2 · product IDs 21244
- Vendor guidance · product IDs 21244
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-04-21T03:00:00-04:00
MODIFIED 2026-04-28T03:00:00-04:00
INGESTED 2026-10-08T12:45:06-04:00