CVE-2025-55315

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.

CVSS v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315	Vendor Advisory
https://andrewlock.net/understanding-the-worst-dotnet-vulnerability-request-smuggling-and-cve-2025-55315/
https://gist.github.com/N3mes1s/d0897c13ca199e739ecc2b562f466040

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:asp.net_core::::::::
	cpe:2.3:a:microsoft:asp.net_core::::::::
	cpe:2.3:a:microsoft:asp.net_core::::::::
	cpe:2.3:a:microsoft:visual_studio_2022::::::::
	cpe:2.3:a:microsoft:visual_studio_2022::::::::
	cpe:2.3:a:microsoft:visual_studio_2022::::::::

History

28 Oct 2025, 21:15

Type	Values Removed	Values Added
References		() https://andrewlock.net/understanding-the-worst-dotnet-vulnerability-request-smuggling-and-cve-2025-55315/ -

28 Oct 2025, 13:15

Type	Values Removed	Values Added
References		() https://gist.github.com/N3mes1s/d0897c13ca199e739ecc2b562f466040 -

16 Oct 2025, 14:56

Type	Values Removed	Values Added
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315 - Vendor Advisory
CPE		cpe:2.3:a:microsoft:visual_studio_2022:::::::: cpe:2.3:a:microsoft:asp.net_core::::::::
First Time		Microsoft Microsoft visual Studio 2022 Microsoft asp.net Core

14 Oct 2025, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-14 17:15

Updated : 2025-10-28 21:15

NVD link : CVE-2025-55315

Mitre link : CVE-2025-55315

CVE.ORG link : CVE-2025-55315

JSON object : View

Products Affected

microsoft

visual_studio_2022
asp.net_core

CWE

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

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