CVE-2025-55315

CRITICAL

9.9

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.

CVE Details

CVSS v3.1 Score9.9

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published10/14/2025

Last Modified10/28/2025

Sourcenvd

Honeypot Sightings0

Affected Products

microsoft:asp.net_coremicrosoft:visual_studio_2022

Weaknesses (CWE)

CWE-444

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315(secure@microsoft.com)

https://andrewlock.net/understanding-the-worst-dotnet-vulnerability-request-smuggling-and-cve-2025-55315/(af854a3a-2127-422b-91ae-364da2661108)

https://gist.github.com/N3mes1s/d0897c13ca199e739ecc2b562f466040(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.