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Vulnerability details: VCID-545g-mqc9-eygb
Vulnerability ID VCID-545g-mqc9-eygb
Aliases CVE-2025-30399
GHSA-266m-wp2v-x7mq
Summary # Microsoft Security Advisory CVE-2025-30399 | .NET Remote Code Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 8.0 and .NET 9.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. An attacker could exploit this vulnerability by placing files in particular locations, leading to unintended code execution. ## Discussion Discussion for this issue can be found at https://github.com/dotnet/runtime/issues/116495 ## <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 8.0 application running on .NET 8.0.16 or earlier. * Any .NET 9.0 application running on .NET 9.0.5 or earlier. ## <a name="affected-packages"></a>Affected Packages The vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below ### <a name=".NET 9"></a>.NET 9 Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- [Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm64) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm64) | >= 9.0.0, < =9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-x64) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-x64) | >= 9.0.0, < =9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-arm64) | >= 9.0.0, < =9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-x64) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm64) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x64) | >= 9.0.0, <= 9.0.5 | 9.0.6 [Microsoft.NetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x86) | >= 9.0.0, <= 9.0.5 | 9.0.6 ### <a name=".NET 8"></a>.NET 8 Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- [Microsoft.NetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-arm64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-arm64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-musl-x64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.linux-x64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-arm64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.osx-x64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-arm64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x64) | >= 8.0.0, <= 8.0.16 | 8.0.17 [Microsoft.NetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.NetCore.App.Runtime.win-x86) | >= 8.0.0, <= 8.0.16 | 8.0.17 ## Advisory FAQ ### <a name="how-affected"></a>How do I know if I am affected? If you have a runtime with a version listed, or an affected package listed in [affected software](#affected-packages) or [affected packages](#affected-software), you're exposed to the vulnerability. ### <a name="how-fix"></a>How do I fix the issue? 1. To fix the issue please install the latest version of .NET 9.0 or .NET 8.0, as appropriate. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. 2. If your application references the vulnerable package, update the package reference to the patched version. * You can list the versions you have installed by running the `dotnet --info` command. You will see output like the following; ``` .NET SDK: Version: 9.0.100 Commit: 59db016f11 Workload version: 9.0.100-manifests.3068a692 MSBuild version: 17.12.7+5b8665660 Runtime Environment: OS Name: Mac OS X OS Version: 15.2 OS Platform: Darwin RID: osx-arm64 Base Path: /usr/local/share/dotnet/sdk/9.0.100/ .NET workloads installed: There are no installed workloads to display. Configured to use loose manifests when installing new manifests. Host: Version: 9.0.0 Architecture: arm64 Commit: 9d5a6a9aa4 .NET SDKs installed: 9.0.100 [/usr/local/share/dotnet/sdk] .NET runtimes installed: Microsoft.AspNetCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Other architectures found: x64 [/usr/local/share/dotnet] registered at [/etc/dotnet/install_location_x64] Environment variables: Not set global.json file: Not found Learn more: https://aka.ms/dotnet/info Download .NET: https://aka.ms/dotnet/download ``` * If you're using .NET 8.0, you should download and install .NET 8.0.17 Runtime or .NET 9.0.314 SDK (for Visual Studio 2022 v17.10 latest Preview) from https://dotnet.microsoft.com/download/dotnet-core/8.0. * If you're using .NET 9.0, you should download and install .NET 9.0.6 Runtime or .NET 9.0.107 SDK (for Visual Studio 2022 v17.12 latest Preview) from https://dotnet.microsoft.com/download/dotnet-core/9.0. Once you have installed the updated runtime or SDK, restart your apps for the update to take effect. Additionally, if you've deployed [self-contained applications](https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd) targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed. ## Other Information ### Reporting Security Issues If you have found a potential security issue in .NET 9.0 or .NET 8.0, please email details to secure@microsoft.com. Reports may qualify for the Microsoft .NET Core & .NET 5 Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at <https://aka.ms/corebounty>. ### Support You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. ### Disclaimer The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. ### External Links [CVE-2025-30399]( https://www.cve.org/CVERecord?id=CVE-2025-30399) ### Revisions V1.0 (June 10, 2025): Advisory published.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-427 Uncontrolled Search Path Element
CWE-426 Untrusted Search Path
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-30399.json
epss 0.00027 https://api.first.org/data/v1/epss?cve=CVE-2025-30399
epss 0.00027 https://api.first.org/data/v1/epss?cve=CVE-2025-30399
epss 0.00058 https://api.first.org/data/v1/epss?cve=CVE-2025-30399
epss 0.00058 https://api.first.org/data/v1/epss?cve=CVE-2025-30399
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-266m-wp2v-x7mq
cvssv3.1 7.5 https://github.com/dotnet/runtime
generic_textual HIGH https://github.com/dotnet/runtime
cvssv3.1 7.5 https://github.com/dotnet/runtime/issues/116495
generic_textual HIGH https://github.com/dotnet/runtime/issues/116495
cvssv3.1 7.5 https://github.com/dotnet/runtime/security/advisories/GHSA-266m-wp2v-x7mq
cvssv3.1_qr HIGH https://github.com/dotnet/runtime/security/advisories/GHSA-266m-wp2v-x7mq
generic_textual HIGH https://github.com/dotnet/runtime/security/advisories/GHSA-266m-wp2v-x7mq
cvssv3.1 7.5 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
cvssv3.1 7.5 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
generic_textual HIGH https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
ssvc Track https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2025-30399
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2025-30399
cvssv3.1 7.5 https://www.cve.org/CVERecord?id=CVE-2025-30399
generic_textual HIGH https://www.cve.org/CVERecord?id=CVE-2025-30399
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-30399.json
https://api.first.org/data/v1/epss?cve=CVE-2025-30399
https://github.com/dotnet/runtime
https://github.com/dotnet/runtime/issues/116495
https://github.com/dotnet/runtime/security/advisories/GHSA-266m-wp2v-x7mq
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
https://nvd.nist.gov/vuln/detail/CVE-2025-30399
https://www.cve.org/CVERecord?id=CVE-2025-30399
2369701 https://bugzilla.redhat.com/show_bug.cgi?id=2369701
GHSA-266m-wp2v-x7mq https://github.com/advisories/GHSA-266m-wp2v-x7mq
RHSA-2025:8812 https://access.redhat.com/errata/RHSA-2025:8812
RHSA-2025:8813 https://access.redhat.com/errata/RHSA-2025:8813
RHSA-2025:8814 https://access.redhat.com/errata/RHSA-2025:8814
RHSA-2025:8815 https://access.redhat.com/errata/RHSA-2025:8815
RHSA-2025:8816 https://access.redhat.com/errata/RHSA-2025:8816
RHSA-2025:8817 https://access.redhat.com/errata/RHSA-2025:8817
RHSA-2025:9066 https://access.redhat.com/errata/RHSA-2025:9066
USN-7563-1 https://usn.ubuntu.com/7563-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-30399.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/dotnet/runtime
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/dotnet/runtime/issues/116495
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/dotnet/runtime/security/advisories/GHSA-266m-wp2v-x7mq
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-06-13T15:46:01Z/ Found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2025-30399
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://www.cve.org/CVERecord?id=CVE-2025-30399
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.05804
EPSS Score 0.00027
Published At June 25, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-06-11T20:38:57.851788+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-266m-wp2v-x7mq/GHSA-266m-wp2v-x7mq.json 36.1.0