CVE-2026-118741
HIGHCVSS 8.1/10EPSS 0.76%
Last modified
CVE-2026-118741 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.. EPSS estimates a 0.76% chance of exploitation in the next 30 days.
Description
Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft.dotnet-scaffold version 10.0 | >= 10.0.0, < 20.3.0 |
| Microsoft | Microsoft.dotnet-scaffold version 20.x | >= 20.0.0-preview.1.26156.3, < 20.3.0 |
| Microsoft | Microsoft.dotnet-scaffold-aspnet version 10.0.0-rc.1.25458.5 | >= 10.0.0-rc.1.25458.5, < 20.3.0 |
| Microsoft | Microsoft.dotnet-scaffold-aspnet version 10.0.0-rc.1.25468.1 | >= 10.0.0-rc.1.25468.1, < 20.3.0 |
| Microsoft | Microsoft.dotnet-scaffold-aspnet version 9.0 | >= 9.0.0, < 20.3.0 |
| Microsoft | Microsoft.dotnet-scaffold-aspnet version 9.0.0-preview.8.24467.5 | >= 9.0.0-preview.8.24467.5, < 20.3.0 |
| Microsoft | Microsoft.dotnet-scaffold-aspnet version 9.0.0-preview.9.24509.5 | >= 9.0.0-preview.9.24509.5, < 20.3.0 |
| Microsoft | Microsoft.DotNet.Web.ProjectTemplates.10.0 | >= 10.0.13, < 10.0.15 |
| Microsoft | Microsoft.DotNet.Web.ProjectTemplates.8.0 | >= 8.0.32, < 8.0.34 |
| Microsoft | Microsoft.DotNet.Web.ProjectTemplates.9.0 | >= 9.0.21, < 9.0.23 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGeneration.Design | >= NOT_YET_AVAILABLE, < 9.0.13 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGeneration.Design version 10.0 | >= 10.0.0-rc.1.25458.5, < 10.0.3 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGeneration.Design version 11.0.0-preview.1.26156.3 | >= 11.0.0-preview.1.26156.3, < publication |
| Microsoft | Microsoft.VisualStudio.Web.CodeGeneration.Design version 11.0.0-preview.1.26230.3 | >= 11.0.0-preview.1.26230.3, < publication |
| Microsoft | Microsoft.VisualStudio.Web.CodeGeneration.Design version 8.0 | >= 8.0.0-preview.1.23117.2, < 8.0.24 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGeneration.Design version 9.0 | >= 9.0.0-preview.1.24112.3, < 9.0.13 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGenerators.Mvc | >= NOT_YET_AVAILABLE, < 9.0.13 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGenerators.Mvc version 10.0 | >= 10.0.0-rc.1.25458.5, < 10.0.3 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGenerators.Mvc version 11.0.0-preview.1.26156.3 | >= 11.0.0-preview.1.26156.3, < publication |
| Microsoft | Microsoft.VisualStudio.Web.CodeGenerators.Mvc version 11.0.0-preview.1.26230.3 | >= 11.0.0-preview.1.26230.3, < publication |
| Microsoft | Microsoft.VisualStudio.Web.CodeGenerators.Mvc version 8.0 | >= 8.0.0-preview.1.23117.2, < 8.0.24 |
| Microsoft | Microsoft.VisualStudio.Web.CodeGenerators.Mvc version 9.0 | >= 9.0.0-preview.1.24112.3, < 9.0.13 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-118741?
Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
How severe is CVE-2026-118741?
CVE-2026-118741 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.
How do I fix CVE-2026-118741?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-118741?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST