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Status published
Critical
CVE-2025-55315
ASP.NET Security Feature Bypass Vulnerability
Vulnerability Description
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Microsoft
View all reports →Affected Software
ASP.NET Core 2.3, ASP.NET Core 8.0, ASP.NET Core 9.0, Microsoft Visual Studio 2022 version 17.10, Microsoft Visual Studio 2022 version 17.12, Microsoft Visual Studio 2022 version 17.14
Vulnerable Versions:
2.3, 8.0, 9.0, 17.10.0, 17.12.0, 17.14.0
Timeline
Official Publish:
October 14th, 2025
Last Modified:
February 22nd, 2026
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L/E:U/RL:O/RC:C