CVE-2026-70183

ASP.NET Core Elevation of Privilege Vulnerability

State: Published
Severity: 7.5 High
Published: Oct 13, 2026
Updated: Oct 31, 2026
Reserved: Aug 3, 2026

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

Product	Versions
ASP.NET Core 10.0Microsoft	10.0 to before 10.0.13Affected
ASP.NET Core 11.0Microsoft	11.0 to before 11.0.0-rc.2Affected
ASP.NET Core 8.0Microsoft	8.0 to before 8.0.32Affected
ASP.NET Core 9.0Microsoft	9.0 to before 9.0.21Affected
Microsoft Visual Studio 2022 version 17.14Microsoft	17.14.0 to before 17.14.42Affected
Microsoft Visual Studio 2026 version 18.10Microsoft	18.10.0 to before 18.10.4Affected

References

ASP.NET Core Elevation of Privilege Vulnerabilityvendor-advisorypatch

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