CVE-2025-55315
Unknown Unknown - Not Provided

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Vulnerability report for CVE-2025-55315, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-10-14

Last updated on: 2025-10-28

Assigner: Microsoft Corporation

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.

CVSS Scores

EPSS Scores

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Meta Information

Published
2025-10-14
Last Modified
2025-10-28
Generated
2026-09-27
AI Q&A
2025-10-14
EPSS Evaluated
2026-09-26
NVD

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
microsoft asp.net_core From 2.3.0 (inc) to 2.3.6 (exc)
microsoft asp.net_core From 8.0.0 (inc) to 8.0.21 (exc)
microsoft asp.net_core From 9.0.0 (inc) to 9.0.10 (exc)
microsoft visual_studio_2022 From 17.10.0 (inc) to 17.10.20 (exc)
microsoft visual_studio_2022 From 17.12.10 (inc) to 17.12.13 (exc)
microsoft visual_studio_2022 From 17.14.0 (inc) to 17.14.17 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-444 The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Attack-Flow Graph

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Executive Summary

This vulnerability is an HTTP request/response smuggling issue in ASP.NET Core where inconsistent interpretation of HTTP requests allows an authorized attacker to bypass a security feature over a network.

Impact Analysis

An attacker exploiting this vulnerability can bypass security features, potentially leading to high impact on confidentiality, integrity, and availability of the affected system.

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EPSS Chart