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ALSA-2026:41893 — Important: .NET 8.0 security, bug fix, and enhancement update

Affected: AlmaLinux:10: aspnetcore-runtime-8.0, AlmaLinux:10: aspnetcore-runtime-dbg-8.0, AlmaLinux:10: aspnetcore-targeting-pack-8.0, AlmaLinux:10: dotnet-apphost-pack-8.0, AlmaLinux:10: dotnet-hostfxr-8.0, AlmaLinux:10: dotnet-runtime-8.0, AlmaLinux:10: dotnet-runtime-dbg-8.0, AlmaLinux:10: dotnet-sdk-8.0, AlmaLinux:10: dotnet-sdk-8.0-source-built-artifacts, AlmaLinux:10: dotnet-sdk-dbg-8.0 and 2 more

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 8.0.129 and .NET Runtime 8.0.29.

Security Fix(es):

* dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM (CVE-2026-50651) * dotnet: .NET Core: Denial of Service via type confusion (CVE-2026-57108) * ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-56170) * ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm (CVE-2026-47300) * ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass (CVE-2026-47303) * dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-47304) * dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation (CVE-2026-47302) * dotnet: .NET Framework: Privilege escalation via code injection (CVE-2026-50650) * dotnet: .NET: Security feature bypass due to incorrect authorization (CVE-2026-50528) * dotnet: .NET: Local code execution via deserialization of untrusted data (CVE-2026-50649) * dotnet: .NET: Local tampering via improper link resolution (CVE-2026-50526) * dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure (CVE-2026-50646) * dotnet: .NET: Denial of Service due to uncontrolled re…

bdu:2026-09808

BIT-dotnet-2026-50649 — .NET Remote Code Execution Vulnerability

Affected: Bitnami: dotnet

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

certfr-2026-avi-0869 — De multiples vulnérabilités ont été découvertes dans Microsoft Windows. Certaines d'entre elles permettent à un attaqua…

certfr-2026-avi-0869

EUVD-2026-376855

fkie_cve-2026-50649

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

msrc_CVE-2026-50649 — .NET Remote Code Execution Vulnerability

msrc_CVE-2026-50649

NCSC-2026-0235 — Kwetsbaarheden verholpen in Microsoft Developer Tools

NCSC-2026-0235

RHSA-2026:27171 — Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

ws: ws: Uninitialized memory disclosure via `websocket.close()` with `TypedArray` dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation dotnet: .NET Framework: Denial of Service via improper input validation dotnet: .NET: Denial of Service due to uncontrolled resource allocation dotnet: .NET: Local tampering via improper link resolution dotnet: .NET Framework: Denial of Service via network-based buffer overflow dotnet: .NET: Security feature bypass due to incorrect authorization dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation dotnet: .NET: Local code execution via deserialization of untrusted data dotnet: .NET Framework: Privilege escalation via code injection dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM dotnet: .NET Core: Denial of Service via type confusion

RHSA-2026:41893 — Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update

ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass dotnet: .NET Security Feature Bypass Vulnerability dotnet: .NET Framework: Denial of Service via improper input validation dotnet: .NET: Denial of Service due to uncontrolled resource allocation dotnet: .NET: Local tampering via improper link resolution dotnet: .NET Framework: Denial of Service via network-based buffer overflow dotnet: .NET: Security feature bypass due to incorrect authorization dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation dotnet: .NET: Local code execution via deserialization of untrusted data dotnet: .NET Framework: Privilege escalation via code injection dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM .NET: .NET: Network Spoofing Vulnerability ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation dotnet: .NET Core: Denial of Service via type confusion

RLSA-2026:41893 — Important: .NET 8.0 security, bug fix, and enhancement update

Affected: Rocky Linux:10: dotnet8.0

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 8.0.129 and .NET Runtime 8.0.29.

Security Fix(es):

* dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM (CVE-2026-50651)

* dotnet: .NET Core: Denial of Service via type confusion (CVE-2026-57108)

* ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-56170)

* ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm (CVE-2026-47300)

* ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass (CVE-2026-47303)

* dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-47304)

* dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation (CVE-2026-47302)

* dotnet: .NET Framework: Privilege escalation via code injection (CVE-2026-50650)

* dotnet: .NET: Security feature bypass due to incorrect authorization (CVE-2026-50528)

* dotnet: .NET: Local code execution via deserialization of untrusted data (CVE-2026-50649)

* dotnet: .NET: Local tampering via improper link resolution (CVE-2026-50526)

* dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure (CVE-2026-50646)

* dotnet: .NET: Denial of Service due to uncontrolled resource allocation (C…

UBUNTU-CVE-2026-50649

Affected: Ubuntu:22.04:LTS: dotnet7

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

WID-SEC-W-2026-2324 — Microsoft DeveloperTools: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Microsoft Visual Studio Code, .NET Framework, Microsoft .NET, Visual Studio 2022 und Visual Studio 2026 ausnutzen, um erweiterte Berechtigungen, einschließlich Administratorrechte, zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen, einen Denial-of-Service-Zustand auszulösen oder Spoofing-Angriffe durchzuführen.