> CVE-2026-44249 [HIGH]

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PUBLISHED
2026-06-11 22:16
MODIFIED
2026-06-11 22:16
CVSS_SCORE V3
8.1
EPSS (Prob. Exploit)
1.29%
Top 29.9%
DATA SOURCES:
NVD 🔗 2026-06-11 RED HAT 🔗 2026-06-14 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-11-05 OSV 🔗 2026-09-20

> DESCRIPTION

Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

> 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:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EXPLOITABILITY
2.2
IMPACT
5.9

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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
High (H)
Conditions spécifiques doivent être réunies 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
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-284 CWE-697

> CWE DETAILED DESCRIPTIONS

CWE-284: Improper Access Control - The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. | CWE-697: Incorrect Comparison - The product compares two entities in a security-relevant context, but the comparison is incorrect.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: Red Hat build of Quarkus 3.27.4.SP1 security update
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A security update for Red Hat build of Apache Camel 4.18 for Quarkus 3.33 is now available. This text-only errata provides information about enhancements that improve your developer experience and en...
Red Hat Security Advisory: Red Hat build of Quarkus 3.33.2.SP1 security update
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Red Hat Offline Knowledge Portal security fixes & content update
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Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.29.0 Release.
Red Hat OpenShift Dev Spaces 3.29.0 has been released.
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.18.1.P1 for Spring Boot release.
Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot patch release and security update is now available. Red Hat Product Security has rated this update as having a security impact of Important. A...
Red Hat Security Advisory: Red Hat Data Grid 8.6.2 security update
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Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.7.1 XP 6.0.5.1 release
JBoss EAP XP 6.0.5.1 release on the EAP 8.1 base. See references for release notes.
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.25 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.25 security pdate
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Streams for Apache Kafka 3.2.1 release and security update
Streams for Apache Kafka 3.2.1 is now available from the Red Hat Customer Portal. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scorin...
Red Hat Security Advisory: RHOAI 2.25.11 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.
Red Hat Security Advisory: Red Hat AMQ Broker 7.13.6 release and security update
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Red Hat Security Advisory: Red Hat AMQ Broker 7.14.1 release and security update
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Red Hat Security Advisory: AMQ Clients 2026.Q3
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Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 for OpenShift image security update
A new image is available for Red Hat Single Sign-On 7.6.13, running on OpenShift Container Platform 3.10 and 3.11, and 4.3.
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update
A security update is now available for Red Hat Single Sign-On 7.6 from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabi...
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New Red Hat Single Sign-On 7.6.13 packages are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability...
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Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update on RHEL 8
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> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> GITHUB SECURITY ADVISORY

GHSA-3qp7-7mw8-wx86 HIGH

Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking

AFFECTED PACKAGES:
MAVEN / io.netty:netty-handler
<= 4.1.134.Final
Fixed in: 4.1.135.Final
MAVEN / io.netty:netty-handler
>= 4.2.0.Final, <= 4.2.14.Final
Fixed in: 4.2.15.Final

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking

AFFECTED PACKAGES:
Unknown / Unknown
200 versions affected
ALIASES:
GHSA-3qp7-7mw8-wx86

> HISTORIQUE DES MODIFICATIONS

Première apparition
11/06/2026 22:16
Source: NVD
📊 ENRICHISSEMENT 01/07/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-284: Improper Access Control - The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. | CWE-697: Incorrect Comparison - The product compares two en...
📊 ENRICHISSEMENT 14/06/2026 05:00
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 14/06/2026 05:00
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 3 Dernière mise à jour: 4 months ago

> REFERENCES

https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
https://github.com/netty/netty/security/advisories/GHSA-3qp7-7mw8-wx86
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