Is it exploited? Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 10 Nov 2026 . If CISA adds it, this page shows it as known exploited.
How likely is exploitation in the next 30 days? 0.8% EPSS score, percentile 55.7 of all scored records. A probability estimated by FIRST, not a report of exploitation.
How severe? 9.0 Critical CVSS v3.1 base score, given by the CNA
Which versions are affected? Affected
from 10.0.0 to before 10.0.15 from 10.0.0 to before 10.0.15 from 10.0.0 to before 10.0.15 from 11.0.0-preview.1 to before 11.0.0 from 11.0.0-preview.1 to before 11.0.0 from 11.0.0-preview.1 to before 11.0.0 and 10 more in the table below
Versions by product
Source: CISA KEV 2026.11.10, as of 10 Nov 2026 ; FIRST EPSS, as of 12 Nov 2026 ; CVE List, as of 12 Nov 2026 . About the data .
Description ASP.NET Core Elevation of Privilege Vulnerability
Incorrect authorization in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Source: CVE List, as of 12 Nov 2026 . About the data .
What to do Advisories and patches This summary is based on the CVE record as of 12 Nov 2026 . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions Versions by product, as listed in the CVE record (16 products) Microsoft .NET 10.0 installed on Linux Status Versions Affected from 10.0.0 to before 10.0.15
Microsoft .NET 10.0 installed on Mac OS Status Versions Affected from 10.0.0 to before 10.0.15
Microsoft .NET 10.0 installed on Windows Status Versions Affected from 10.0.0 to before 10.0.15
Microsoft .NET 11.0 installed on Linux Status Versions Affected from 11.0.0-preview.1 to before 11.0.0
Microsoft .NET 11.0 installed on Mac OS Status Versions Affected from 11.0.0-preview.1 to before 11.0.0
Microsoft .NET 11.0 installed on Windows Status Versions Affected from 11.0.0-preview.1 to before 11.0.0
Microsoft .NET 8.0 installed on Linux Status Versions Affected from 8.0.0 to before 8.0.34
Microsoft .NET 8.0 installed on Mac OS Status Versions Affected from 8.0.0 to before 8.0.34
Microsoft .NET 8.0 installed on Windows Status Versions Affected from 8.0.0 to before 8.0.34
Microsoft .NET 9.0 installed on Linux Status Versions Affected from 9.0.0 to before 9.0.23
Microsoft .NET 9.0 installed on Mac OS Status Versions Affected from 9.0.0 to before 9.0.23
Microsoft .NET 9.0 installed on Windows Status Versions Affected from 9.0.0 to before 9.0.23
Microsoft Microsoft Visual Studio 2022 version 17.14 Status Versions Affected from 17.14.0 to before 17.14.45
Microsoft Microsoft Visual Studio 2026 version 18.11 Status Versions Affected from 18.11.0 to before 18.11.4
Microsoft Microsoft Visual Studio 2026 version 18.12 Status Versions Affected from 18.12.0 to before 18.12.0
Microsoft Microsoft.AspNetCore.Http.Connections Status Versions Affected from 1.2.0 to before 1.2.14
Source: CVE List, as of 12 Nov 2026 . About the data .
Weakness CWE-863 CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline Date Event 10 Nov 2026 CVE record published 11 Nov 2026 CVE record last updated
Known exploited Microsoft vulnerabilities CVE-2026-124194 : Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability (added 10 Nov 2026 ) CVE-2026-96951 : Microsoft Windows Command Injection Vulnerability (added 13 Oct 2026 ) CVE-2026-65660 : Microsoft SharePoint Code Injection Vulnerability (added 25 Sep 2026 ) CVE-2026-81963 : Microsoft Windows Link Following Vulnerability (added 8 Sep 2026 ) CVE-2026-85880 : Microsoft Windows Heap-Based Buffer Overflow Vulnerability (added 8 Sep 2026 )