CVE-2025-21176

high

Published 2025-01-14 · Modified 2025-01-17

CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2

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VIR risk

8.0

Description

Important: .NET 9.0 security 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-2025-0382.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://bugzilla.redhat.com/2337958

vendor Authored 2026-05-27

Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:0382

vendor Authored 2026-05-27

Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2025-0381.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://bugzilla.redhat.com/2337927

vendor Authored 2026-05-27

Vendor advisory: alma — https://bugzilla.redhat.com/2337926

vendor Authored 2026-05-27

Vendor advisory: alma — https://bugzilla.redhat.com/2337893

vendor Authored 2026-05-27

Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:0381

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:0381

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:0382

vendor Authored 2026-05-27

Vendor advisory: redhat — https://access.redhat.com/errata/RHBA-2025:0305

vendor Authored 2026-05-27

Vendor advisory: redhat — https://access.redhat.com/errata/RHBA-2025:0304

OS impact

OS	Version	Status	Fixed in
rhel	9	fixed
rocky	8	fixed

Package impact

Ecosystem	Package	Vulnerable	Fixed
NuGet	Microsoft.NetCore.App.Runtime.linux-arm	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.linux-arm64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-x64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.linux-x64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.osx-arm64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.osx-x64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.win-arm	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.win-arm64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.win-x64	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.win-x86	`>=9.0.0,<9.0.1`	`9.0.1`
NuGet	Microsoft.NetCore.App.Runtime.linux-arm	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.linux-arm64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-x64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.linux-x64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.osx-arm64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.osx-x64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.win-arm	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.win-arm64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.win-x64	`>=8.0.0,<8.0.12`	`8.0.12`
NuGet	Microsoft.NetCore.App.Runtime.win-x86	`>=8.0.0,<8.0.12`	`8.0.12`

References

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