7.5High

CVE-2026-109481ASP.NET Core Elevation of Privilege Vulnerability

Microsoft .NET 11.0 installed on Linux; Microsoft .NET 11.0 installed on Mac OS; Microsoft .NET 11.0 installed on Windows; Microsoft Microsoft Visual Studio 20… Published: 2026-11-10 21:15 (2 days ago)

Description

Cross-site request forgery (csrf) in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.

Weakness (CWE): CWE-352

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
Microsoft	Microsoft Visual Studio 2026 version 18.12	18.12.0 – < 18.12.0
Microsoft	.NET 11.0 installed on Linux	11.0.0-preview.1 – < 11.0.0
Microsoft	.NET 11.0 installed on Mac OS	11.0.0-preview.1 – < 11.0.0
Microsoft	.NET 11.0 installed on Windows	11.0.0-preview.1 – < 11.0.0

References and patches

ASP.NET Core Elevation of Privilege Vulnerability vendor-advisorypatch

CVSS score

7.5High

Source: microsoft · CVSS 3.1

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

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

All scores (2)

cna	CVSS 3.1	7.5High
secure@microsoft.com	CVSS 3.1	7.5High

EPSS (chance of exploitation in 30 days)

0.34%

higher than 28% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: total

Timeline

ID reserved2026-10-12
Published2026-11-10 21:15
Reached IP-DB2026-11-10 22:04
Last updated2026-11-12 18:40

Assigned by (CNA): microsoft
NVD status: Awaiting Analysis

View at source: CVE.org · NVD

Get told when these products get a new vulnerability

Turn on email alerts

Free · with an account · switch off any time

Recent CVEs in the same product — .NET

5.3Medium

CVE-2026-120796 2 days ago

.NET Denial of Service Vulnerability

Microsoft .NET 11.0 installed on Linux; Microsoft .NET 11.0 installed on Mac OS; Microsoft .NET 11.0 installed on Windows; Microsoft System.Text.Json

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

1.2%EPSS

7.5High

CVE-2026-118749 2 days ago

ASP.NET Core Denial of Service Vulnerability

Microsoft .NET 11.0 installed on Linux; Microsoft .NET 11.0 installed on Mac OS; Microsoft .NET 11.0 installed on Windows; Microsoft Microsoft Visual Studio 2026 version 18.12

Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network.

1.1%EPSS

7.5High

CVE-2026-118748 2 days ago

ASP.NET Core Denial of Service Vulnerability

Microsoft .NET 11.0 installed on Linux; Microsoft .NET 11.0 installed on Mac OS; Microsoft .NET 11.0 installed on Windows; Microsoft Microsoft Visual Studio 2026 version 18.12

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

1.1%EPSS

8.8High

CVE-2026-118745 2 days ago

Visual Studio Remote Code Execution Vulnerability

Microsoft .NET 10.0 installed on Windows; Microsoft .NET 11.0 installed on Windows; Microsoft .NET 8.0 installed on Windows; Microsoft .NET 9.0 installed on Windows

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

6.8Medium

CVE-2026-118746 2 days ago

.NET Security Feature Bypass Vulnerability

Microsoft .NET 11.0 installed on Linux; Microsoft .NET 11.0 installed on Mac OS

Not failing securely ('failing open') in .NET allows an unauthorized attacker to bypass a security feature over a network.

8.8High

CVE-2026-114159 2 days ago

Visual Studio Remote Code Execution Vulnerability

Microsoft .NET 10.0 installed on Windows; Microsoft .NET 11.0 installed on Windows; Microsoft .NET 8.0 installed on Windows; Microsoft .NET 9.0 installed on Windows

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.