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Global apt → Multiple sectors HIGH 1h Global general → Digital Content & Intellectual Property MEDIUM 1h Global malware → Technology and Software Development CRITICAL 1h Global ddos → Technology and Social Media HIGH 2h Global phishing → Financial Services, Telecommunications, General Public HIGH 2h Global supply_chain → Software Development and Technology CRITICAL 3h Global apt → Multiple sectors / Critical Infrastructure CRITICAL 3h Global malware → Financial Services CRITICAL 4h Global general → Software/Technology LOW 4h Global malware → Energy CRITICAL 4h Global apt → Multiple sectors HIGH 1h Global general → Digital Content & Intellectual Property MEDIUM 1h Global malware → Technology and Software Development CRITICAL 1h Global ddos → Technology and Social Media HIGH 2h Global phishing → Financial Services, Telecommunications, General Public HIGH 2h Global supply_chain → Software Development and Technology CRITICAL 3h Global apt → Multiple sectors / Critical Infrastructure CRITICAL 3h Global malware → Financial Services CRITICAL 4h Global general → Software/Technology LOW 4h Global malware → Energy CRITICAL 4h Global apt → Multiple sectors HIGH 1h Global general → Digital Content & Intellectual Property MEDIUM 1h Global malware → Technology and Software Development CRITICAL 1h Global ddos → Technology and Social Media HIGH 2h Global phishing → Financial Services, Telecommunications, General Public HIGH 2h Global supply_chain → Software Development and Technology CRITICAL 3h Global apt → Multiple sectors / Critical Infrastructure CRITICAL 3h Global malware → Financial Services CRITICAL 4h Global general → Software/Technology LOW 4h Global malware → Energy CRITICAL 4h

Vulnerabilities ›

CVE-2026-33871

High

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 se

CWE-770 — Weakness Type

                    Published: Mar 27, 2026                      ·  Modified: Apr 3, 2026                      ·  Source: NVD                

CVSS v3

7.5

🔗 NVD Official

📄 Description (English)

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.

🤖

Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 1

https://github.com/netty/netty/security/advisories/GHSA-w9fj-cfpg-grvv

security-advisories@github.com

Vendor Advisory

📦 Affected Products / CPE 2 entries

netty:netty

netty:netty

📊 CVSS Score

7.5

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityN — None / Network

IntegrityN — None / Network

AvailabilityH — High

📋 Quick Facts

Severity High

CVSS Score7.5

CWECWE-770

EPSS0.08%

Exploit No

Patch ✗ No

Published 2026-03-27

Source Feed nvd

🏷️ Tags

CWE-770

🏢 Vendor Advisories

🔗 https://github.com/netty/netty/security/advisories/G...

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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