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CVE-2026-114146ImportantEoPNetwork

ASP.NET Core Elevation of Privilege Vulnerability

MSRC advisory NVD CVE.org

Assessment

Incorrect authorization in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

Severity
Important
CVSS base score
9.0
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:L/PR:L/UI:R/S:C/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-863: Incorrect Authorization
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
LowAC:L
Privileges required
LowPR:L
User interaction
RequiredUI:R
Scope
ChangedS:C
Confidentiality
HighC:H
Integrity
HighI:H
Availability
HighA:H

Updates that fix it

3 KBs
KBTypeApplies toOther CVEs
KB5135241 Security Update.NET 10.0 installed on Linux, .NET 10.0 installed on Mac OS, .NET 10.0 installed on WindowsAll CVEs in KB5135241
KB5135242 Security Update.NET 9.0 installed on Linux, .NET 9.0 installed on Mac OS, .NET 9.0 installed on WindowsAll CVEs in KB5135242
KB5135243 Security Update.NET 8.0 installed on Linux, .NET 8.0 installed on Mac OS, .NET 8.0 installed on WindowsAll CVEs in KB5135243

Affected products

Developer Tools, Other
16 affected products
Page history

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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.

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