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ASP.NET Core Elevation of Privilege Vulnerability

Assessment

Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.

Severity
Important
CVSS base score
8.1
Impact
Elevation of Privilege
Exploitation detected
No known exploitation (MSRC assessment)
Exploitability
Exploitation Less Likely
Publicly disclosed
No (MSRC assessment)
EPSS · 30-day forecast
No EPSS score collected
Customer action
Required: follow the MSRC remediation guidance
More details
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Public detection template
No Nuclei template is listed in the current collected catalog
Component
ASP.NET Core
Weakness
CWE-640: Weak Password Recovery Mechanism for Forgotten Password
Issued by
Microsoft
Published
10 Nov 2026 · November 2026
Last revised
10 Nov 2026
CVSS 3.1 base metricsRed raises the risk · green lowers it
Attack vector
NetworkAV:N
Attack complexity
HighAC:H
Privileges required
NonePR:N
User interaction
NoneUI:N
Scope
UnchangedS:U
Confidentiality
HighC:H
Integrity
HighI:H
Availability
HighA:H

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Developer Tools, Other
13 affected products
  • Microsoft.dotnet-scaffold
  • Microsoft.dotnet-scaffold-aspnet
  • Microsoft.DotNet.Web.ProjectTemplates.10.0
  • Microsoft.DotNet.Web.ProjectTemplates.8.0
  • Microsoft.DotNet.Web.ProjectTemplates.9.0
  • Microsoft.VisualStudio.Web.CodeGeneration.Design
  • Microsoft.VisualStudio.Web.CodeGeneration.Design on .NET 10.0
  • Microsoft.VisualStudio.Web.CodeGeneration.Design on .NET 8.0
  • Microsoft.VisualStudio.Web.CodeGeneration.Design on .NET 9.0
  • Microsoft.VisualStudio.Web.CodeGenerators.Mvc
  • Microsoft.VisualStudio.Web.CodeGenerators.Mvc on .NET 10.0
  • Microsoft.VisualStudio.Web.CodeGenerators.Mvc on .NET 8.0
  • Microsoft.VisualStudio.Web.CodeGenerators.Mvc on .NET 9.0
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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 10 Nov 19:25 UTC · 262 of 275 readable · 261 fully read · documentation 469/469 current