Race condition in Visual Studio and ASP.NET Core - CVE-2026-70183
Published: October 14, 2026
Vulnerability identifier: #VU154624
CSH Severity: Low
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70183
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper synchronization of a shared resource in ASP.NET Core when concurrently accessing the resource. A remote user can win a race condition to escalate privileges.
Affected software
Visual Studio
ASP.NET Core
ASP.NET Core
How to mitigate CVE-2026-70183
Install security update from vendor's website.
Visual Studio - update to 17.14.42
ASP.NET Core - addressed in versions 8.0.32, 9.0.21
ASP.NET Core - addressed in versions 8.0.32, 9.0.21