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VULNERABILITIES

CVE-2026-42577 Details

Description

Netty is an asynchronous, event-driven network application framework. From 4.2.0.Final to 4.2.13.Final , Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed, leading to stale channels that are never cleaned up and, in some code paths, a 100% CPU busy-loop in the event loop thread. This vulnerability is fixed in 4.2.13.Final.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/netty/netty/commit/0ec3d97fab376e243d328ac95fbd288ba0f6e22d [email protected]Patch
https://github.com/netty/netty/pull/16689 [email protected]Issue TrackingPatch
https://github.com/netty/netty/security/advisories/GHSA-rwm7-x88c-3g2p [email protected]MitigationVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-772Missing Release of Resource after Effective Lifetime[email protected]

Affected Products

ProductVersions
netty netty
>= 4.2.0, < 4.2.13

CPE

  • cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-42577
NVD Published Date:
May 13, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-42577 Details - Not Deferred