CVE-2025-55248

high

Published 2025-10-15 · Modified 2025-11-03

CVSS v3

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

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/9/ALSA-2025-18151.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://errata.almalinux.org/9/ALSA-2025-18149.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2025-18150.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:18150

vendor Authored 2026-05-27

Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2025-18148.html

vendor Authored 2026-05-27

Vendor advisory: alma — https://bugzilla.redhat.com/2403086

vendor Authored 2026-05-27

Vendor advisory: alma — https://bugzilla.redhat.com/2403085

vendor Authored 2026-05-27

Vendor advisory: alma — https://bugzilla.redhat.com/2403083

vendor Authored 2026-05-27

Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:18148

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:18149

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:18151

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:18150

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:18148

vendor Authored 2026-05-27

Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2025:18151

vendor Authored 2026-05-27

Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2025:18149

OS impact

OS	Version	Status
rhel	9	fixed
rocky	8	fixed
rocky	9	fixed

Package impact

Ecosystem	Package	Vulnerable	Fixed
NuGet	Microsoft.NetCore.App.Runtime.linux-arm	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.linux-arm64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-x64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.linux-x64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.osx-arm64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.osx-x64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.win-arm	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.win-arm64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.win-x64	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.win-x86	`>=9.0.0,<9.0.10`	`9.0.10`
NuGet	Microsoft.NetCore.App.Runtime.linux-arm	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.linux-arm64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-arm64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.linux-musl-x64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.linux-x64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.osx-arm64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.osx-x64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.win-arm	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.win-arm64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.win-x64	`>=8.0.0,<8.0.21`	`8.0.21`
NuGet	Microsoft.NetCore.App.Runtime.win-x86	`>=8.0.0,<8.0.21`	`8.0.21`

References

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