CVE-2025-55163

7.5 HIGH
Published: August 13, 2025 Modified: November 04, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4
Source: security-advisories@github.com
Exploit Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/08/16/1
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.kb.cert.org/vuls/id/767506
Source: af854a3a-2127-422b-91ae-364da2661108

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.2%
39th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

netty