> CVE-2026-42577 [HIGH]

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PUBLISHED
2026-05-13 19:17
MODIFIED
2026-05-13 19:17
CVSS_SCORE V3
7.5
EPSS (Prob. Exploit)
0.41%
Top 64.9%
DATA SOURCES:
NVD đź”— 2026-05-13 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-01 GITHUB đź”— 2026-10-29 OSV đź”— 2026-11-02

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EXPLOITABILITY
3.9
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-772

> CWE DETAILED DESCRIPTIONS

CWE-772: Missing Release of Resource after Effective Lifetime - The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

> GITHUB SECURITY ADVISORY

GHSA-rwm7-x88c-3g2p HIGH

Netty epoll transport denial of service via RST on half-closed TCP connection

AFFECTED PACKAGES:
MAVEN / io.netty:netty-transport-classes-epoll
>= 4.2.0.Final, < 4.2.13.Final
Fixed in: 4.2.13.Final

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Netty: epoll transport denial of service via RST on half-closed TCP connection

AFFECTED PACKAGES:
Unknown / Unknown
13 versions affected
ALIASES:
GHSA-rwm7-x88c-3g2p

> HISTORIQUE DES MODIFICATIONS

Première apparition
13/05/2026 19:17
Source: NVD
📊 ENRICHISSEMENT 01/06/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-772: Missing Release of Resource after Effective Lifetime - The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.
Total des modifications: 1 Dernière mise à jour: 5 months ago

> REFERENCES

https://github.com/netty/netty/commit/0ec3d97fab376e243d328ac95fbd288ba0f6e22d
https://github.com/netty/netty/pull/16689
https://github.com/netty/netty/security/advisories/GHSA-rwm7-x88c-3g2p
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