CVE-2025-21171
high
CVSS v3
—
CVSS v4 NEW
—
VIR risk
8.0
Description
RHSA-2025:0382: .NET 9.0 security update (Important)
Predictions
Exploit likelihood
30%
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 withsource_tier=community-verified.
OS impact
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Rocky Linux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 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 |
References
- https://access.redhat.com/errata/RHBA-2025:0305
- https://errata.rockylinux.org/RLSA-2025:0382
- https://github.com/dotnet/runtime/security/advisories/GHSA-p54p-p3qm-8vgj
- https://nvd.nist.gov/vuln/detail/CVE-2025-21171
- https://github.com/dotnet/runtime
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21171
- https://access.redhat.com/errata/RHSA-2025:0382
- https://bugzilla.redhat.com/2337893
- https://bugzilla.redhat.com/2337926
- https://bugzilla.redhat.com/2337927
- https://bugzilla.redhat.com/2337958
- https://errata.almalinux.org/8/ALSA-2025-0382.html
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.