Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-59902— Netty: Memory Exhaustion in SctpMessageCompletionHandler

Quick assessment

Affected
netty netty
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netty是Netty团队开源的一个高性能网络通信框架。 Netty 4.1.137.Final之前版本和4.2.17.Final之前版本存在资源管理错误漏洞，该漏洞源于SctpMessageCompletionHandler对不完整消息和片段数量进行了限制，但未限制maxBufferedBytes，允许未经身份验证的对等方通过大型SCTP片段耗尽内存。

CVSS 7.5 · High EPSS 0.68% · P50

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
netty netty < 4.1.137.Final affected
>= 4.2.0.Final, < 4.2.17.Final affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-59902

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Netty: Memory Exhaustion in SctpMessageCompletionHandler
Source: CVE Program / CVE List V5
Vulnerability Description
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Netty 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netty是Netty团队开源的一个高性能网络通信框架。 Netty 4.1.137.Final之前版本和4.2.17.Final之前版本存在资源管理错误漏洞，该漏洞源于SctpMessageCompletionHandler对不完整消息和片段数量进行了限制，但未限制maxBufferedBytes，允许未经身份验证的对等方通过大型SCTP片段耗尽内存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
netty netty < 4.1.137.Final -

II. Public POCs for CVE-2026-59902

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 13208 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-59902

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-59902 (2)

Vendor Advisories for CVE-2026-59902 (1)

Vendor Pages for CVE-2026-59902 (1)

IV. Related Vulnerabilities

Same product: netty
Same vendor: netty
Same weakness: CWE-400

V. Comments for CVE-2026-59902

No comments yet

Leave a comment