SEPTEMBER 19, 2026
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Case File

CVE-2026-59902

HIGH · CVSS 7.5 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

The vulnerability affects the Netty framework, specifically in the SctpMessageCompletionHandler, which fails to limit the maximum buffered bytes for incomplete SCTP messages, potentially allowing unauthenticated peers to consume excessive memory. This can lead to denial-of-service conditions, impacting the availability of applications using affected versions. Organizations utilizing Netty versions prior to 4.1.137.Final and 4.2.17.Final should prioritize updating to mitigate this high-severity risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-59902
Severity
HIGH
CVSS
7.5
EPSS
0.37%

Original NVD 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.