CVE-2025-55315
CRITICALCVSS 9.9/10EPSS 66.26%
Last modified
CVE-2025-55315 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. 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.. EPSS estimates a 66.26% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Asp.Net Core | >= 2.3.0, < 2.3.6 |
| Microsoft | Asp.Net Core | >= 8.0.0, < 8.0.21 |
| Microsoft | Asp.Net Core | >= 9.0.0, < 9.0.10 |
| Microsoft | Visual Studio 2022 | >= 17.10.0, < 17.10.20 |
| Microsoft | Visual Studio 2022 | >= 17.12.10, < 17.12.13 |
| Microsoft | Visual Studio 2022 | >= 17.14.0, < 17.14.17 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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.
How severe is CVE-2025-55315?
CVE-2025-55315 has a CVSS score of 9.9/10 (CRITICAL severity). The EPSS model estimates a 66.26% probability of exploitation in the next 30 days.
How do I fix CVE-2025-55315?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2025-55315?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST