Microsoft Security Advisory CVE-2026-50528 – .NET Security Feature Bypass Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET TLS/SSL System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the SslStream implementation. An attacker can bypass authorization checks during TLS/SSL communication by exploiting flaws in the processing of secure connections. This may allow access to protected...