CVE-2021-26423

high

Published 2022-10-25 · Modified 2021-08-12

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CVSS v3

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.5

Description

RHSA-2021:3148: .NET 5.0 security and bugfix update (Important)

Predictions

Exploit likelihood

83%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`6.0.0.sdk100-1`

Red Hat Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

Package impact

Ecosystem	Package	Vulnerable	Fixed
NuGet	Microsoft.NETCore.App.Runtime.win-x86	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.win-x86	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.win-x64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.win-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.win-arm64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.win-arm64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.win-arm	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.win-arm	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.osx-x64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.osx-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.osx-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.linux-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.linux-arm64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.Mono.linux-arm	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.linux-x64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.linux-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.linux-musl-x64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.linux-musl-x64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.linux-musl-arm64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.linux-musl-arm64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.linux-musl-arm	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.rhel.6-x64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.linux-arm64	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.linux-arm64	`>=5.0.0,<5.0.9`	`5.0.9`
NuGet	Microsoft.NETCore.App.Runtime.linux-arm	`>=3.1.0,<3.1.18`	`3.1.18`
NuGet	Microsoft.NETCore.App.Runtime.linux-arm	`>=5.0.0,<5.0.9`	`5.0.9`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

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