CVE-2025-55315

CRITICAL
Published Oct 14, 2025 Modified Oct 28, 2025 CWE-444

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 v3.1 Score

9.9
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

Weakness Type (CWE)

CWE-444 CWE-444

Affected Products

Vendor Product
microsoft asp.net_core
microsoft asp.net_core
microsoft asp.net_core
microsoft visual_studio_2022
microsoft visual_studio_2022
microsoft visual_studio_2022

References

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 9.9 (CRITICAL).
How severe is CVE-2025-55315? +
CVE-2025-55315 has a CVSS v3.1 score of 9.9 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2025-55315? +
CVE-2025-55315 affects products from microsoft, specifically: asp.net_core, visual_studio_2022. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-55315? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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