CVE-2026-40372HighCVSS 9.1
ASP.NET Core Elevation of Privilege Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
🎯 Affected products2
- ASP.NET Core 10.0
- Microsoft Visual Studio 2026 version 18.5
✅ Remediation
KB5091596 (Security Update) — fixed build 10.0.7 KBRelease Notes (Security Update) — fixed build 18.5.2
🔗 References (5)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40372
- patchhttps://dotnet.microsoft.com/en-us/download/dotnet/10.0
- referencehttps://support.microsoft.com/help/5091596
- patchhttps://my.visualstudio.com/Downloads?q=Visual Studio 2026 version 18.5
- referencehttps://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes