CVE-2021-26701
Fixed in a distro release EPSS 30%CVSS 8.1
.NET Core Remote Code Execution Vulnerability
Products: Microsoft .NET Core 2.1, Microsoft .NET Core 3.1, Microsoft .NET 5.0, Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3), Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8), Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6), Microsoft Visual Studio 2019 for Mac, Microsoft Visual Studio 2019 version 16.8 (includes 16.0 - 16.7), Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8), Microsoft PowerShell Core 7.1, Microsoft PowerShell Core 7.0
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| NuGet | System.Text.Encodings.Web | 4.5.1 |
| NuGet | System.Text.Encodings.Web | 4.7.2 |
| NuGet | System.Text.Encodings.Web | 5.0.1 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Arch Linux | dotnet-runtime | 5.0.4.sdk104-1 |
| Arch Linux | dotnet-sdk | 5.0.4.sdk104-1 |
| Red Hat Enterprise Linux 8 | aspnetcore-runtime-3.1 | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | aspnetcore-runtime-5.0 | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | aspnetcore-targeting-pack-3.1 | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | aspnetcore-targeting-pack-5.0 | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet | 0:2.1.522-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet | 0:5.0.104-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-apphost-pack-3.1 | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-apphost-pack-3.1-debuginfo | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-apphost-pack-5.0 | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-apphost-pack-5.0-debuginfo | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-debuginfo | 0:2.1.522-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-debugsource | 0:2.1.522-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-host | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-host-debuginfo | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-host-fxr-2.1 | 0:2.1.26-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-host-fxr-2.1-debuginfo | 0:2.1.26-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-hostfxr-3.1 | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-hostfxr-3.1-debuginfo | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-hostfxr-5.0 | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-hostfxr-5.0-debuginfo | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-runtime-2.1 | 0:2.1.26-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-runtime-2.1-debuginfo | 0:2.1.26-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-runtime-3.1 | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-runtime-3.1-debuginfo | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-runtime-5.0 | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-runtime-5.0-debuginfo | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-sdk-2.1 | 0:2.1.522-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-sdk-2.1.5xx | 0:2.1.522-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-sdk-2.1.5xx-debuginfo | 0:2.1.522-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-sdk-3.1 | 0:3.1.113-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-sdk-3.1-debuginfo | 0:3.1.113-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-sdk-5.0 | 0:5.0.104-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-sdk-5.0-debuginfo | 0:5.0.104-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-targeting-pack-3.1 | 0:3.1.13-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-targeting-pack-5.0 | 0:5.0.4-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-templates-3.1 | 0:3.1.113-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet-templates-5.0 | 0:5.0.104-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet3.1 | 0:3.1.113-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet3.1-debuginfo | 0:3.1.113-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet3.1-debugsource | 0:3.1.113-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet5.0 | 0:5.0.104-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet5.0-debuginfo | 0:5.0.104-1.el8_3 |
| Red Hat Enterprise Linux 8 | dotnet5.0-debugsource | 0:5.0.104-1.el8_3 |
| Red Hat Enterprise Linux 8 | netstandard-targeting-pack-2.1 | 0:5.0.104-1.el8_3 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21 | 0:2.1-25.el7_9 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21-dotnet | 0:2.1.522-1.el7_9 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21-dotnet-debuginfo | 0:2.1.522-1.el7_9 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21-dotnet-host | 0:2.1.26-1.el7_9 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21-dotnet-runtime-2.1 | 0:2.1.26-1.el7_9 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21-dotnet-sdk-2.1 | 0:2.1.522-1.el7_9 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21-dotnet-sdk-2.1.5xx | 0:2.1.522-1.el7_9 |
| Red Hat rhel dotnet 2.1 | rh-dotnet21-runtime | 0:2.1-25.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-aspnetcore-runtime-3.1 | 0:3.1.13-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-aspnetcore-targeting-pack-3.1 | 0:3.1.13-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet | 0:3.1.113-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-apphost-pack-3.1 | 0:3.1.13-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-debuginfo | 0:3.1.113-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-host | 0:3.1.13-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-hostfxr-3.1 | 0:3.1.13-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-runtime-3.1 | 0:3.1.13-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-sdk-3.1 | 0:3.1.113-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-targeting-pack-3.1 | 0:3.1.13-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-dotnet-templates-3.1 | 0:3.1.113-1.el7_9 |
| Red Hat rhel dotnet 3.1 | rh-dotnet31-netstandard-targeting-pack-2.1 | 0:3.1.113-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-aspnetcore-runtime-5.0 | 0:5.0.4-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-aspnetcore-targeting-pack-5.0 | 0:5.0.4-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet | 0:5.0.104-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-apphost-pack-5.0 | 0:5.0.4-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-debuginfo | 0:5.0.104-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-host | 0:5.0.4-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-hostfxr-5.0 | 0:5.0.4-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-runtime-5.0 | 0:5.0.4-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-sdk-5.0 | 0:5.0.104-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-targeting-pack-5.0 | 0:5.0.4-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-dotnet-templates-5.0 | 0:5.0.104-1.el7_9 |
| Red Hat rhel dotnet 5.0 | rh-dotnet50-netstandard-targeting-pack-2.1 | 0:5.0.104-1.el7_9 |