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NVD Vulnerability Details :
CVE-2026-42577
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-13 May, 2026 | 19:17
Updated At-18 May, 2026 | 14:05

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches
The Netty Project
netty
>>netty>>Versions from 4.2.0(inclusive) to 4.2.13(exclusive)
cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-772Primarysecurity-advisories@github.com
CWE ID: CWE-772
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/netty/netty/commit/0ec3d97fab376e243d328ac95fbd288ba0f6e22dsecurity-advisories@github.com
Patch
https://github.com/netty/netty/pull/16689security-advisories@github.com
Issue Tracking
Patch
https://github.com/netty/netty/security/advisories/GHSA-rwm7-x88c-3g2psecurity-advisories@github.com
Mitigation
Vendor Advisory
Hyperlink: https://github.com/netty/netty/commit/0ec3d97fab376e243d328ac95fbd288ba0f6e22d
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/netty/netty/pull/16689
Source: security-advisories@github.com
Resource:
Issue Tracking
Patch
Hyperlink: https://github.com/netty/netty/security/advisories/GHSA-rwm7-x88c-3g2p
Source: security-advisories@github.com
Resource:
Mitigation
Vendor Advisory
Change History
0Changes found
Details not found