Vulnerability Intelligence Report
ASP.NET Core Elevation of Privilege Vulnerability
CVE-2026-114148
Incorrect default permissions in ASP.NET Core allows an authorized attacker to elevate privileges locally.
No Active Exploit Signals
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:0.36%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-276 ↗CWE-276: Incorrect Default Permissions
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | .NET 10.0 installed on Linux | 10.0.0 < 10.0.403 (affected) |
| Microsoft | .NET 10.0 installed on Mac OS | 10.0.0 < 10.0.403 (affected) |
| Microsoft | .NET 10.0 installed on Windows | 10.0.0 < 10.0.403 (affected) |
| Microsoft | .NET 11.0 installed on Linux | 11.0.0-preview.1 < 11.0.100-rc.3 (affected) |
| Microsoft | .NET 11.0 installed on Mac OS | 11.0.0-preview.1 < 11.0.100-rc.3 (affected) |
| Microsoft | .NET 11.0 installed on Windows | 11.0.0-preview.1 < 11.0.100-rc.3 (affected) |
| Microsoft | .NET 8.0 installed on Linux | 8.0.0 < 8.0.427 (affected) |
| Microsoft | .NET 8.0 installed on Mac OS | 8.0.0 < 8.0.427 (affected) |
| Microsoft | .NET 8.0 installed on Windows | 8.0.0 < 8.0.427 (affected) |
| Microsoft | .NET 9.0 installed on Linux | 9.0.0 < 9.0.320 (affected) |
| Microsoft | .NET 9.0 installed on Mac OS | 9.0.0 < 9.0.320 (affected) |
| Microsoft | .NET 9.0 installed on Windows | 9.0.0 < 9.0.320 (affected) |
| Microsoft | .NET source-build Linux tarballs (all archive types) | 8.0.100 < 10.0.403-servicing.26523.112 (affected) |
| Microsoft | ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published) | 8.0.0 < 9.0.22 (affected) |
Threat Intelligence Signals
EPSS Score
0.355%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-10-20T21:56:39 |
| Published | 2026-10-29T15:21:47 |
| Patch Date | 2026-10-25 |
| Last Updated | 2026-10-31T18:13:34 |
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