CVE-2025-55163

Aliases:GHSA-prj3-ccx8-p6x4
Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 13 Aug 2025, 14:17
Last modified:04 Nov 2025, 21:13

Vulnerability Summary

Overall Risk (default)
medium
43/100
CVSS Score
8.2 HIGH
v4.0 (cve.org)
EPSS Score
0.05% LOW
0% probability -0.07%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

13 Aug 2025, 14:17
Published
Vulnerability first disclosed
04 Nov 2025, 21:13
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v4.0•HIGH•Score: 8.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • v4.0•HIGH•Score: 8.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.05%• Percentile: 17%

Techniques & Countermeasures

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • io.grpc•grpc-netty-shaded

    < 1.75.0

  • io.netty•netty-codec-http2

    ≥ 4.2.0.Alpha1, < 4.2.4.Final | < 4.1.124.Final

  • netty•netty

    < 4.1.124.Final | < 4.2.4.Final | < 4.1.124 | ≥ 4.2.0, < 4.2.4

References (7)