CVE-2026-118741 json
ASP.NET Core Elevation of Privilege Vulnerability
published yesterday modified 17h ago also EUVD-2026-122509
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
Improper authentication in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
Patch / fix
- Microsoft Microsoft.dotnet-scaffold 20.3.0
- Microsoft Microsoft.dotnet-scaffold-aspnet 20.3.0
- Microsoft Microsoft.DotNet.Web.ProjectTemplates.10.0 10.0.15
- Microsoft Microsoft.DotNet.Web.ProjectTemplates.8.0 8.0.34
- Microsoft Microsoft.DotNet.Web.ProjectTemplates.9.0 9.0.23
- Microsoft Microsoft.VisualStudio.Web.CodeGeneration.Design 9.0.13
- Microsoft Microsoft.VisualStudio.Web.CodeGenerators.Mvc 9.0.13
Is CVE-2026-118741 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- yesterday
Exploit prediction
0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | 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 |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Microsoft.dotnet-scaffold
- Microsoft Microsoft.dotnet-scaffold-aspnet
- Microsoft Microsoft.DotNet.Web.ProjectTemplates.10.0
- Microsoft Microsoft.DotNet.Web.ProjectTemplates.8.0
- Microsoft Microsoft.DotNet.Web.ProjectTemplates.9.0
- Microsoft Microsoft.VisualStudio.Web.CodeGeneration.Design
- Microsoft Microsoft.VisualStudio.Web.CodeGenerators.Mvc
Classification
- Weakness
-
- CWE-640 Weak Password Recovery Mechanism for Forgotten Password
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-118741
vendor-advisory, patch
Sources
- CVE List CVE-2026-118741
- NVD CVE-2026-118741
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.