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CVE.org (no NVD analysis yet)· CNA microsoft

CVE-2026-114148: ASP.NET Core Elevation of Privilege Vulnerability

HighCVSS 7.8 · v3.1—Proof of concept Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.35% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: .NET 10.0 installed on Linux 10.0.403; .NET 10.0 installed on Mac OS 10.0.403; .NET 10.0 installed on Windows 10.0.403.

Low priority for now. Upgrade to .NET 10.0 installed on Linux 10.0.403; .NET 10.0 installed on Mac OS 10.0.403; .NET 10.0 installed on Windows 10.0.403 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Incorrect default permissions in ASP.NET Core allows an authorized attacker to elevate privileges locally.

Published
Oct 29, 2026
Updated
Nov 10, 2026
EPSS
0.3% · 29th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
7.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-114148

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft .NET 10.0 installed on Linux

    • 10.0.0 and later · before 10.0.403affected

  • Microsoft .NET 10.0 installed on Mac OS

    • 10.0.0 and later · before 10.0.403affected

  • Microsoft .NET 10.0 installed on Windows

    • 10.0.0 and later · before 10.0.403affected

  • Microsoft .NET 11.0 installed on Linux

    • 11.0.0-preview.1 and later · before 11.0.100-rc.3affected

  • Microsoft .NET 11.0 installed on Mac OS

    • 11.0.0-preview.1 and later · before 11.0.100-rc.3affected

  • Microsoft .NET 11.0 installed on Windows

    • 11.0.0-preview.1 and later · before 11.0.100-rc.3affected

  • Microsoft .NET 8.0 installed on Linux

    • 8.0.0 and later · before 8.0.427affected

  • Microsoft .NET 8.0 installed on Mac OS

    • 8.0.0 and later · before 8.0.427affected

  • Microsoft .NET 8.0 installed on Windows

    • 8.0.0 and later · before 8.0.427affected

  • Microsoft .NET 9.0 installed on Linux

    • 9.0.0 and later · before 9.0.320affected

  • Microsoft .NET 9.0 installed on Mac OS

    • 9.0.0 and later · before 9.0.320affected

  • Microsoft .NET 9.0 installed on Windows

    • 9.0.0 and later · before 9.0.320affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10aspnetcore-runtime-10.0before 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10aspnetcore-runtime-8.0before 8.0.33-1.el10_28.0.33-1.el10_2
AlmaLinux:10aspnetcore-runtime-9.0before 9.0.22-1.el10_29.0.22-1.el10_2
AlmaLinux:10aspnetcore-runtime-dbg-10.0before 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10aspnetcore-runtime-dbg-8.0before 8.0.33-1.el10_28.0.33-1.el10_2
AlmaLinux:10aspnetcore-runtime-dbg-9.0before 9.0.22-1.el10_29.0.22-1.el10_2
AlmaLinux:10aspnetcore-targeting-pack-10.0before 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10aspnetcore-targeting-pack-8.0before 8.0.33-1.el10_28.0.33-1.el10_2
AlmaLinux:10aspnetcore-targeting-pack-9.0before 9.0.22-1.el10_29.0.22-1.el10_2
AlmaLinux:10dotnet-apphost-pack-10.0before 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10dotnet-apphost-pack-8.0before 8.0.33-1.el10_28.0.33-1.el10_2
AlmaLinux:10dotnet-apphost-pack-9.0before 9.0.22-1.el10_29.0.22-1.el10_2
AlmaLinux:10dotnet-hostbefore 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10dotnet-hostfxr-10.0before 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10dotnet-hostfxr-8.0before 8.0.33-1.el10_28.0.33-1.el10_2
AlmaLinux:10dotnet-hostfxr-9.0before 9.0.22-1.el10_29.0.22-1.el10_2
AlmaLinux:10dotnet-runtime-10.0before 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10dotnet-runtime-8.0before 8.0.33-1.el10_28.0.33-1.el10_2
AlmaLinux:10dotnet-runtime-9.0before 9.0.22-1.el10_29.0.22-1.el10_2
AlmaLinux:10dotnet-runtime-dbg-10.0before 10.0.14-1.el10_210.0.14-1.el10_2
AlmaLinux:10dotnet-runtime-dbg-8.0before 8.0.33-1.el10_28.0.33-1.el10_2
AlmaLinux:10dotnet-runtime-dbg-9.0before 9.0.22-1.el10_29.0.22-1.el10_2
AlmaLinux:10dotnet-sdk-10.0before 10.0.114-1.el10_210.0.114-1.el10_2
AlmaLinux:10dotnet-sdk-10.0-source-built-artifactsbefore 10.0.114-1.el10_210.0.114-1.el10_2

+96

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

Published before and after this one in the same product

  • Later →CVE-2026-105544Nov 10, 2026 · .NET Elevation of Privilege Vulnerability
    30Monitor
  • Later →CVE-2026-109475Nov 10, 2026 · .NET Denial of Service Vulnerability
    30Monitor
  • Later →CVE-2026-109476Nov 10, 2026 · ASP.NET Core Information Disclosure Vulnerability
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
.NET 10.0 installed on Linux10.0.403 · KB5133966Microsoft (MSRC)
.NET 10.0 installed on Mac OS10.0.403 · KB5133966Microsoft (MSRC)
.NET 10.0 installed on Windows10.0.403 · KB5133966Microsoft (MSRC)
.NET 11.0 installed on Linux11.0.100-rc.3 · Release NotesMicrosoft (MSRC)
.NET 11.0 installed on Mac OS11.0.100-rc.3 · Release NotesMicrosoft (MSRC)
.NET 11.0 installed on Windows11.0.100-rc.3 · Release NotesMicrosoft (MSRC)
.NET 8.0 installed on Linux8.0.427 · KB5133964Microsoft (MSRC)
.NET 8.0 installed on Mac OS8.0.427 · KB5133964Microsoft (MSRC)
.NET 8.0 installed on Windows8.0.427 · KB5133964Microsoft (MSRC)
.NET 9.0 installed on Linux9.0.320 · KB5133965Microsoft (MSRC)
.NET 9.0 installed on Mac OS9.0.320 · KB5133965Microsoft (MSRC)
.NET 9.0 installed on Windows9.0.320 · KB5133965Microsoft (MSRC)
.NET source-build Linux tarballs (all archive types)10.0.403-servicing.26523.112 · KB5133966Microsoft (MSRC)
ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published)9.0.22 · KB5133965Microsoft (MSRC)
almalinux:aspnetcore-runtime-8.08.0.33-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:aspnetcore-runtime-9.09.0.22-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:aspnetcore-runtime-dbg-8.08.0.33-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:aspnetcore-runtime-dbg-9.09.0.22-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:aspnetcore-targeting-pack-8.08.0.33-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:aspnetcore-targeting-pack-9.09.0.22-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dotnet-apphost-pack-8.08.0.33-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:dotnet-apphost-pack-9.09.0.22-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dotnet-hostfxr-8.08.0.33-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:dotnet-hostfxr-9.09.0.22-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dotnet-runtime-8.08.0.33-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:dotnet-runtime-9.09.0.22-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dotnet-runtime-dbg-8.08.0.33-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:dotnet-runtime-dbg-9.09.0.22-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dotnet-sdk-8.08.0.133-1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:dotnet-sdk-8.0-source-built-artifacts8.0.133-1.el8_10 · AlmaLinux:8Package registry (OSV)

+15

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:12026-10-27

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-3 d
  2. Published
  3. Fix recordedsame day
  4. TodayNov 13, 2026+15 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-276 · Incorrect Default Permissions

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓
  3. Exploit maturity— → poc

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records