Microsoft .NET 9.0 runtime vulnerabilities (CVE)

CVE records published for Microsoft .NET 9.0 runtime, newest first. Follow to get an email when a new one appears.

56 results
7.5High
CVE-2026-58280

.NET Denial of Service Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Uncontrolled recursion in .NET allows an unauthorized attacker to deny service over a network.

1.2%EPSS
6.5Medium
CVE-2026-96238

.NET Security Feature Bypass Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.

7.5High
CVE-2026-96237

.NET Remote Code Execution Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime; Microsoft Microsoft Visual Studio 2022 version 17.14

Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to execute code over a network.

8.8High
CVE-2026-96235

.NET Remote Code Execution Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.

5.3Medium
CVE-2026-96234

.NET Information Disclosure Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.

7.5High
CVE-2026-96233

ASP.NET Core Denial of Service Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Out-of-bounds write in ASP.NET Core allows an unauthorized attacker to deny service over a network.

7.5High
CVE-2026-96232

.NET Information Disclosure Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Out-of-bounds read in .NET allows an unauthorized attacker to disclose information over a network.

7.8High
CVE-2026-96231

.NET Elevation of Privilege Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

6.5Medium
CVE-2026-96229

.NET Information Disclosure Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Permissive list of allowed inputs in .NET allows an unauthorized attacker to disclose information over a network.

7.8High
CVE-2026-96225

.NET Elevation of Privilege Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

8.8High
CVE-2026-83520

.NET Remote Code Execution Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.

1.4%EPSS
8.8High
CVE-2026-70035

.NET Framework Remote Code Execution Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Deserialization of untrusted data in .NET Framework allows an unauthorized attacker to execute code over a network.

1.4%EPSS
8.8High
CVE-2026-96224

.NET Remote Code Execution Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.

7.3High
CVE-2026-70190

.NET Elevation of Privilege Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 9.0 runtime; Microsoft Microsoft Visual Studio 2022 version 17.14

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

6.7Medium
CVE-2026-70165

.NET Elevation of Privilege Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 9.0 runtime; Microsoft Microsoft Visual Studio 2022 version 17.14

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

7.3High
CVE-2026-70161

.NET Elevation of Privilege Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 9.0 runtime; Microsoft Microsoft Visual Studio 2022 version 17.14

Improper limitation of a pathname to a restricted directory ('path traversal') in .NET allows an authorized attacker to elevate privileges locally.

8.8High
CVE-2026-70174

.NET Remote Code Execution Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Improperly implemented security check for standard in .NET allows an unauthorized attacker to execute code over a network.

8.8High
CVE-2026-87697

.NET Remote Code Execution Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.

7.5High
CVE-2026-69651

.NET Denial of Service Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

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

1.2%EPSS
5.9Medium
CVE-2026-66822

.NET Information Disclosure Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime

Insertion of sensitive information into sent data in .NET allows an unauthorized attacker to disclose information over a network.

7.0High
CVE-2026-69806

.NET Elevation of Privilege Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 11.0 runtime; Microsoft .NET 9.0 runtime; Microsoft Microsoft Visual Studio 2022 version 17.14

Exposure of sensitive information to an unauthorized actor in .NET allows an authorized attacker to elevate privileges locally.