Risk Scores
CVSS v3.1
9.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu | .NET |
Timeline
- Apr 29, 2026 CVE Published
- Apr 29, 2026 Distribution Patch
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4365 USN-8215-1: .NET vulnerability 29 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: .NET Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2026-40372 Original Bulletin: https://ubuntu.com/security/notices/USN-8215-1 Comment: CVSS (Max): 9.1 CVE-2026-40372 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) CVSS Source: Ubuntu Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N EPSS (Max): 0.0% (6th) CVE-2026-40372 2026-04-28 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-8215-1: .NET vulnerability Publication date 28 April 2026 Overview .NET could be made to crash or run programs as an administrator. Releases 25.10 24.04 LTS --------------------------------------------------------------------------------- Open side navigation Packages o dotnet10 - .NET CLI tools and runtime Details It was discovered that the Microsoft.AspNetCore.DataProtection library in .NET did not properly verify cryptographic signatures under certain conditions. A remote attacker could possibly use this issue to elevate privileges. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version aspnetcore-runtime-10.0 - 10.0.7-0ubuntu1~25.10.1 dotnet-host-10.0 - 10.0.7-0ubuntu1~25.10.1 dotnet-hostfxr-10.0 - 10.0.7-0ubuntu1~25.10.1 25.10 questing dotnet-runtime-10.0 - 10.0.7-0ubuntu1~25.10.1 dotnet-sdk-10.0 - 10.0.107-0ubuntu1~25.10.1 dotnet-sdk-aot-10.0 - 10.0.107-0ubuntu1~25.10.1 dotnet10 - 10.0.107-10.0.7-0ubuntu1~25.10.1 aspnetcore-runtime-10.0 - 10.0.7-0ubuntu1~24.04.1 dotnet-host-10.0 - 10.0.7-0ubuntu1~24.04.1 dotnet-hostfxr-10.0 - 10.0.7-0ubuntu1~24.04.1 24.04 LTS noble dotnet-runtime-10.0 - 10.0.7-0ubuntu1~24.04.1 dotnet-sdk-10.0 - 10.0.107-0ubuntu1~24.04.1 dotnet-sdk-aot-10.0 - 10.0.107-0ubuntu1~24.04.1 dotnet10 - 10.0.107-10.0.7-0ubuntu1~24.04.1 --------------------------------------------------------------------------------- References o CVE-2026-40372 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu | .NET |