VIR Vulnerability Intelligence Relay

CVE-2020-8927

high
Published 2021-12-20 · Modified 2022-03-11
CVSS v3
—
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS v2
—
VIR risk
8.0

Description

Important: .NET 5.0 security and bugfix update

Predictions

Exploit likelihood
30%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2022-0830.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2022-0827.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2021-1702.html

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:1702

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2022:0827

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2022:0830

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-8927.html

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-8927

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202009-13

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202009-12

OS impact
OSVersionStatusFixed in
debian debianbookwormfixed1.0.9-1
debian debianbullseyefixed1.0.9-1
debian debianforkyfixed1.0.9-1
debian debiansidfixed1.0.9-1
debian debiantrixiefixed1.0.9-1
arch archfixed1.0.9-1
suse slesaffected
rockylinux rocky8fixed

Package impact
EcosystemPackageVulnerableFixed
rust crates.iocompu-brotli-sys
rust crates.iobrotli-sys
rust crates.iocompu-brotli-sys<1.0.91.0.9
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-arm>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.osx-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.win-arm>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.win-arm64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.win-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.win-x86>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x86.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x86.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x86.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-x64>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.osx-x64>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.linux-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.linux-x64.Cross.browser-wasm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.linux-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.osx-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-musl-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.maccatalyst-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x86.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.browser-wasm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-musl-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-musl-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-musl-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.browser-wasm.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.win-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.win-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.win-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.osx-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-arm>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-arm64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-musl-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.osx-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.browser-wasm>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-arm>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-arm64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.browser-wasm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.maccatalyst-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvos-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-arm64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.android-x64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-musl-arm64>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.win-arm>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.win-arm64>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.win-x64>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.win-x86>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvossimulator-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvossimulator-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.browser-wasm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-arm64>=3.0.0,<3.1.233.1.23
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-musl-arm>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-musl-arm64>=5.0.0,<5.0.155.0.15
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.ios-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.ios-arm.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.ios-arm.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.ios-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.x64>=6.0.0,<6.0.36.0.3
python PyPIbrotli<1.0.81.0.8
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.osx-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.osx-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvos-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.win-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.win-x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-arm>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-musl-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.linux-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.x86>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.maccatalyst-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.linux-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.osx-arm64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.osx-x64>=6.0.0,<6.0.36.0.3
nuget NuGetMicrosoft.NETCore.App.Runtime.win-arm>=6.0.0,<6.0.36.0.3
golang Gogithub.com/google/brotli
rust crates.iobrotli-sys>=0.0.0-0
rust crates.iocompu-brotli-sys>=0.0.0-0,<1.0.91.0.9

References

Verify integrity in audit chain (admin only). AS-IS.