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CVE-2025-55163
Good to know:
Date: August 13, 2025
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.
Severity Score
Severity Score
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
CWE-770Top Fix
Upgrade Version
Upgrade to version io.netty:netty-codec-http2:4.1.124.Final;io.netty:netty-codec-http2:4.2.4.Final;io.netty:netty-codec-http2:4.2.4.Final;io.netty:netty-codec-http2:4.1.124.Final;https://github.com/netty/netty.git - netty-4.1.124.Final;https://github.com/netty/netty.git - 4.2.4.Final
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | HIGH |