CVE-2025-55163

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:netty:netty::::::::
	cpe:2.3:a:netty:netty::::::::

History

10 Sep 2025, 14:48

Type	Values Removed	Values Added
References	~~() https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4 -~~	() https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4 - Exploit, Vendor Advisory
Summary		(es) Netty es un framework de aplicaciones de red asíncrono y basado en eventos. En versiones anteriores a la 4.1.124.Final y la 4.2.4.Final, Netty era vulnerable a ataques DDoS de MadeYouReset. Esta vulnerabilidad lógica del protocolo HTTP/2 utiliza tramas de control HTTP/2 malformadas para superar el límite máximo de transmisiones concurrentes, lo que provoca el agotamiento de recursos y una denegación de servicio distribuida. Este problema se ha corregido en las versiones 4.1.124.Final y la 4.2.4.Final.
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
First Time		Netty netty Netty
CPE		cpe:2.3:a:netty:netty::::::::

13 Aug 2025, 15:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-08-13 15:15

Updated : 2025-09-10 14:48

NVD link : CVE-2025-55163

Mitre link : CVE-2025-55163

CVE.ORG link : CVE-2025-55163

JSON object : View

Products Affected

netty

netty

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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