Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit - which results in resource exhaustion and distributed denial of service. This issue has been patched in versions 4.1.124.Final and 4.2.4.Final.

Project Subscriptions

Vendors Products
Advisories
Source ID Title
EUVD EUVD EUVD-2025-28583 Netty affected by MadeYouReset HTTP/2 DDoS vulnerability
Github GHSA Github GHSA GHSA-prj3-ccx8-p6x4 Netty affected by MadeYouReset HTTP/2 DDoS vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 04 Nov 2025 22:30:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Wed, 10 Sep 2025 15:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

Sat, 16 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important


Thu, 14 Aug 2025 06:30:00 +0000

Type Values Removed Values Added
First Time appeared Netty
Netty netty
Vendors & Products Netty
Netty netty

Wed, 13 Aug 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 13 Aug 2025 14:30:00 +0000

Type Values Removed Values Added
Description Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit - which results in resource exhaustion and distributed denial of service. This issue has been patched in versions 4.1.124.Final and 4.2.4.Final.
Title Netty MadeYouReset HTTP/2 DDoS Vulnerability
Weaknesses CWE-770
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-11-04T21:13:02.288Z

Reserved: 2025-08-07T18:27:23.307Z

Link: CVE-2025-55163

cve-icon Vulnrichment

Updated: 2025-11-04T21:13:02.288Z

cve-icon NVD

Status : Modified

Published: 2025-08-13T15:15:39.390

Modified: 2025-11-04T22:16:30.293

Link: CVE-2025-55163

cve-icon Redhat

Severity : Important

Publid Date: 2025-08-13T14:17:36Z

Links: CVE-2025-55163 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-08-13T21:47:02Z

Weaknesses