Microsoft Net
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Recent Microsoft Net Security Advisories
| Advisory | Title | Published |
|---|---|---|
| CVE-2026-70354 | CVE-2026-70354 .NET Core Remote Code Execution Vulnerability | August 11, 2026 |
| CVE-2026-62871 | CVE-2026-62871 .NET Elevation of Privilege Vulnerability | August 11, 2026 |
| CVE-2026-62902 | CVE-2026-62902 .NET Information Disclosure Vulnerability | August 11, 2026 |
| CVE-2026-62897 | CVE-2026-62897 .NET Framework Remote Code Execution Vulnerability | August 11, 2026 |
| CVE-2026-62909 | CVE-2026-62909 .NET Elevation of Privilege Vulnerability | August 11, 2026 |
| CVE-2026-62901 | CVE-2026-62901 .NET Denial of Service Vulnerability | August 11, 2026 |
| CVE-2026-68819 | CVE-2026-68819 Windows Network File System Denial of Service Vulnerability | August 11, 2026 |
| CVE-2026-61366 | CVE-2026-61366 Windows Network Connection Broker Elevation of Privilege Vulnerability | August 11, 2026 |
| CVE-2026-62899 | CVE-2026-62899 .NET Security Feature Bypass Vulnerability | August 11, 2026 |
| CVE-2026-62900 | CVE-2026-62900 .NET Information Disclosure Vulnerability | August 11, 2026 |
By the Year
In 2026 there have been 54 vulnerabilities in Microsoft Net with an average score of 7.4 out of ten. Last year, in 2025 Net had 8 security vulnerabilities published. That is, 46 more vulnerabilities have already been reported in 2026 as compared to last year. However, the average CVE base score of the vulnerabilities in 2026 is greater by 0.06.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 54 | 7.39 |
| 2025 | 8 | 7.34 |
| 2024 | 21 | 7.57 |
| 2023 | 34 | 7.46 |
| 2022 | 12 | 7.01 |
| 2021 | 8 | 6.76 |
| 2020 | 5 | 5.00 |
It may take a day or so for new Net vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Microsoft Net Security Vulnerabilities
Aug 2026: Microsoft QUIC Information Disclosure Vulnerability
CVE-2026-62898
7.5 - High
- August 11, 2026
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
Dangling pointer
Aug 2026: .NET Core Remote Code Execution Vulnerability
CVE-2026-70354
7.8 - High
- August 11, 2026
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Memory Corruption
Aug 2026: .NET Framework Elevation of Privilege Vulnerability
CVE-2026-65810
7.8 - High
- August 11, 2026
Relative path traversal in .NET Framework allows an unauthorized attacker to elevate privileges locally.
Relative Path Traversal
Aug 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-62886
7.8 - High
- August 11, 2026
Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.
Integer Overflow or Wraparound
Aug 2026: .NET Framework Elevation of Privilege Vulnerability
CVE-2026-62872
8.8 - High
- August 11, 2026
Incorrect authorization in .NET Framework allows an authorized attacker to elevate privileges over a network.
AuthZ
Aug 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-62871
7.8 - High
- August 11, 2026
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
Memory Corruption
Aug 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-58641
7.8 - High
- August 11, 2026
Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.
Integer Overflow or Wraparound
Aug 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-62909
7.8 - High
- August 11, 2026
Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.
Unchecked Return Value
Aug 2026: .NET Information Disclosure Vulnerability
CVE-2026-62902
6.5 - Medium
- August 11, 2026
Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.
Inclusion of Functionality from Untrusted Control Sphere
Aug 2026: .NET Denial of Service Vulnerability
CVE-2026-62901
7.5 - High
- August 11, 2026
Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.
Unchecked Input for Loop Condition
Aug 2026: .NET Information Disclosure Vulnerability
CVE-2026-62900
5.9 - Medium
- August 11, 2026
Improper removal of sensitive information before storage or transfer in .NET allows an unauthorized attacker to disclose information over a network.
Improper Removal of Sensitive Information Before Storage or Transfer
Aug 2026: .NET Security Feature Bypass Vulnerability
CVE-2026-62899
5.9 - Medium
- August 11, 2026
Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.
HTTP Request Smuggling
Aug 2026: .NET Framework Remote Code Execution Vulnerability
CVE-2026-62897
7 - High
- August 11, 2026
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.
Integer Overflow or Wraparound
Jul 2026: .NET Spoofing Vulnerability
CVE-2026-50659
6.5 - Medium
- July 14, 2026
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
Output Sanitization
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-50651
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: .NET Framework Elevation of Privilege Vulnerability
CVE-2026-50650
7.8 - High
- July 14, 2026
Improper control of generation of code ('code injection') in .NET Framework allows an unauthorized attacker to elevate privileges locally.
Code Injection
Jul 2026: .NET Remote Code Execution Vulnerability
CVE-2026-50649
7.8 - High
- July 14, 2026
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
Marshaling, Unmarshaling
Jul 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-50648
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET Framework allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: .NET Framework Remote Code Execution Vulnerability
CVE-2026-50646
7.8 - High
- July 14, 2026
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Protection Mechanism Failure
Jul 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-50527
7.5 - High
- July 14, 2026
Stack-based buffer overflow in .NET Framework allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: .NET Security Feature Bypass Vulnerability
CVE-2026-50528
8.2 - High
- July 14, 2026
Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.
AuthZ
Jul 2026: .NET Tampering Vulnerability
CVE-2026-50526
7 - High
- July 14, 2026
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
insecure temporary file
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-50525
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-50524
7.5 - High
- July 14, 2026
Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to deny service over a network.
Improper Validation of Specified Type of Input
Jul 2026: .NET Security Feature Bypass Vulnerability
CVE-2026-47304
8.1 - High
- July 14, 2026
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Improper Verification of Cryptographic Signature
Jul 2026: ASP.NET Core Elevation of Privilege Vulnerability
CVE-2026-47303
8.8 - High
- July 14, 2026
Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Authentication Bypass by Assumed-Immutable Data
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-47302
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jul 2026: ASP.NET Core Elevation of Privilege Vulnerability
CVE-2026-47300
8.8 - High
- July 14, 2026
Incorrect implementation of authentication algorithm in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Incorrect Implementation of Authentication Algorithm
Jul 2026: .NET Denial of Service Vulnerability
CVE-2026-57108
7.5 - High
- July 14, 2026
Access of resource using incompatible type ('type confusion') in .NET Core allows an unauthorized attacker to deny service over a network.
Object Type Confusion
Jul 2026: Active Directory Federation Server Denial of Service Vulnerability
CVE-2026-50647
7.5 - High
- July 14, 2026
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Infinite Loop
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50411
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50355
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50324
5.9 - Medium
- July 14, 2026
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Infinite Loop
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50368
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50304
7.5 - High
- July 14, 2026
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack Overflow
Jul 2026: Azure Active Directory Denial of Service Vulnerability
CVE-2026-50653
7.5 - High
- July 14, 2026
Loop with unreachable exit condition ('infinite loop') in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Infinite Loop
Jul 2026: Azure Active Directory Denial of Service Vulnerability
CVE-2026-50652
7.5 - High
- July 14, 2026
Deserialization of untrusted data in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Marshaling, Unmarshaling
Jul 2026: ASP.NET Core Denial of Service Vulnerability
CVE-2026-56170
7.5 - High
- July 14, 2026
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Allocation of Resources Without Limits or Throttling
Jun 2026: ASP.NET Core Denial of Service Vulnerability
CVE-2026-45591
7.5 - High
- June 09, 2026
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Resource Exhaustion
Jun 2026: .NET SDK Elevation of Privilege Vulnerability
CVE-2026-45490
7.8 - High
- June 09, 2026
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
AuthZ
Jun 2026: .NET Tampering Vulnerability
CVE-2026-45491
6.2 - Medium
- June 09, 2026
Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.
insecure temporary file
May 2026: ASP.NET Core Denial of Service Vulnerability
CVE-2026-42899
7.5 - High
- May 12, 2026
Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Infinite Loop
May 2026: .NET Core Tampering Vulnerability
CVE-2026-32175
4.3 - Medium
- May 12, 2026
A tampering vulnerability exists when .NET Core improperly handles specially crafted files. An attacker who successfully exploited this vulnerability could write arbitrary files and directories to certain locations on a vulnerable system. However, an attacker would have limited control over the destination of the files and directories. To exploit the vulnerability, an attacker must send a specially crafted file to a vulnerable system. The security update fixes the vulnerability by ensuring .NET Core properly handles files.
Absolute Path Traversal
May 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-35433
7.3 - High
- May 12, 2026
Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.
Improper Input Validation
May 2026: .NET Elevation of Privilege Vulnerability
CVE-2026-32177
7.3 - High
- May 12, 2026
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
Heap-based Buffer Overflow
Apr 2026: .NET Denial of Service Vulnerability
CVE-2026-26171
7.5 - High
- April 14, 2026
Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
Resource Exhaustion
Apr 2026: .NET and Visual Studio Denial of Service Vulnerability
CVE-2026-32203
7.5 - High
- April 14, 2026
Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.
Stack Overflow
Apr 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-23666
7.5 - High
- April 14, 2026
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Improper Handling of Exceptional Conditions
Apr 2026: .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
CVE-2026-33116
7.5 - High
- April 14, 2026
Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.
Infinite Loop
Apr 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-32226
5.9 - Medium
- April 14, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.
Race Condition
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