Bug 2548790 (CVE-2026-70179) - CVE-2026-70179 dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability
Summary: CVE-2026-70179 dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Pr...
Keywords:
Status: NEW
Alias: CVE-2026-70179
Deadline: 2026-10-13
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-09 19:22 UTC by Charles Timko
Modified: 2026-10-19 15:10 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Charles Timko 2026-10-09 19:22:53 UTC 
Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

Affected packages:
- Microsoft.AspNetCore.Authentication.Negotiate (release 10.0): 10.0.0 - 10.0.12; fixed 10.0.13
- Microsoft.AspNetCore.Authentication.Negotiate (release 8.0): 8.0.0 - 8.0.31; fixed 8.0.32
- Microsoft.AspNetCore.Authentication.Negotiate (release 9.0): 9.0.0 - 9.0.20; fixed 9.0.21
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