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URL: https://nvd.nist.gov/vuln/detail/CVE-2025-55163

⇱ NVD - CVE-2025-55163

  1. Vulnerabilities

CVE-2025-55163 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

CVSS-B 8.2 HIGH
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

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2025/08/16/1 CVE
https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4 GitHub, Inc. Exploit  Vendor Advisory 
https://www.kb.cert.org/vuls/id/767506 CVE

Weakness Enumeration

CWE-ID CWE Name Source
CWE-770 Allocation of Resources Without Limits or Throttling GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 5:41:23 AM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2025-08-13T14:37:06.148395Z","id":"CVE-2025-55163","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by GitHub, Inc. 6/17/2026 5:41:23 AM

Action Type Old Value New Value
Added Affected 
[{"vendor":"netty","product":"netty","versions":[{"version":"< 4.1.124.Final","status":"affected"},{"version":"< 4.2.4.Final","status":"affected"}]}]

CVE Modified by CVE 11/04/2025 5:16:30 PM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2025/08/16/1

CVE Modified by CVE 11/03/2025 3:19:15 PM

Action Type Old Value New Value
Added Reference 
https://www.kb.cert.org/vuls/id/767506

Initial Analysis by NIST 9/10/2025 10:48:03 AM

Action Type Old Value New Value
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added CPE Configuration 
OR
 *cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.124
 *cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (excluding) 4.2.4
Added Reference Type 
GitHub, Inc.: https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4 Types: Exploit, Vendor Advisory

New CVE Received from GitHub, Inc. 8/13/2025 11:15:39 AM

Action Type Old Value New Value
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.
Added CVSS V4.0 
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
Added CWE 
CWE-770
Added Reference 
https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4

Quick Info

CVE Dictionary Entry:
CVE-2025-55163
NVD Published Date:
08/13/2025
NVD Last Modified:
06/17/2026
Source:
GitHub, Inc.