Race Condition Vulnerability in ASP.NET Core by Microsoft
CVE-2026-70183

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Asp.net Core 10.0
Asp.net Core 11.0
Asp.net Core 8.0
Asp.net Core 9.0
Vendor
CVE Published:
13 October 2026

What is CVE-2026-70183?

A race condition vulnerability exists in ASP.NET Core that permits authorized attackers to exploit improper synchronization of shared resources. This flaw can enable attackers to elevate their privileges over a network, potentially compromising sensitive information or systems. Proper patching and vulnerability management are essential to mitigate these risks.

Affected Version(s)

ASP.NET Core 10.0 10.0 < 10.0.13

ASP.NET Core 11.0 11.0 < 11.0.0-rc.2

ASP.NET Core 8.0 8.0 < 8.0.32

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.