Is CVE-2025-55315 actively exploited?

CVE-2025-55315 has no public evidence of in-the-wild exploitation as of 2025-10-28.

What is the CVSS score for CVE-2025-55315?

CVE-2025-55315 has a CVSS score of 9.9 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L.

How do I patch CVE-2025-55315?

Patch guidance is available from microsoft security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-55315.

Fix CVE-2025-55315 - CRITICAL microsoft asp.net core

Q: Which products are affected by CVE-2025-55315?

6 products: microsoft asp.net core, microsoft asp.net core, microsoft asp.net core, microsoft visual studio 2022, microsoft visual studio 2022, and 1 more.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: low
Weaknesses: CWE-444

Metadata

Primary Vendor: MICROSOFT
Published: 10/14/2025
Last Modified: 10/28/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

microsoft : asp.net_coremicrosoft : asp.net_coremicrosoft : asp.net_coremicrosoft : visual_studio_2022microsoft : visual_studio_2022microsoft : visual_studio_2022

Remediation Guidance

Executive Summary

View on NIST NVD