> CVE-2026-62243 [HIGH]

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PUBLISHED
2026-08-22 13:16
MODIFIED
2026-08-22 13:16
CVSS_SCORE V3
8.7
EPSS (Prob. Exploit)
0.16%
Top 95.7%
DATA SOURCES:
NVD đź”— 2026-08-22 CWE MITRE đź”— 2026-09-01 FIRST EPSS đź”— 2026-10-25 OSV đź”— 2026-09-14

> DESCRIPTION

Netty (io.netty:netty-handler) versions from 4.2.0.Final through 4.2.16.Final and versions through 4.1.136.Final disable TLS hostname verification on the SslProvider.OPENSSL client path when a plain (non-extended) X509TrustManager is used and Unsafe-based trust-manager wrapping is unavailable (Java 25+). In this configuration the OpenSSL client does not perform hostname verification, allowing a man-in-the-middle attacker to present a certificate issued for a different hostname that is accepted without validation. Fixed in 4.2.17.Final and 4.1.137.Final.

> AFFECTED_PRODUCTS

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

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-297

> CWE DETAILED DESCRIPTIONS

CWE-297: Improper Validation of Certificate with Host Mismatch - The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actually associated with that host.

> RED HAT SECURITY ADVISORIES

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Red Hat AMQ Broker 7.13.6 is now available from the Red Hat Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring Sy...
Red Hat Security Advisory: Red Hat AMQ Broker 7.14.1 release and security update
Red Hat AMQ Broker 7.14.1 is now available from the Red Hat Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring Sy...
Red Hat Security Advisory: Red Hat build of Keycloak 26.4.16 Security Update
New Red Hat build of Keycloak 26.4.16 packages are available from the Customer Portal
Red Hat Security Advisory: Red Hat build of Keycloak 26.6.7 Security Update
New Red Hat build of Keycloak 26.6.7 packages are available from the Customer Portal
Red Hat Security Advisory: Red Hat build of Keycloak 26.4.16 Images Security Update
New images are available for Red Hat build of Keycloak 26.4.16 and Red Hat build of Keycloak 26.4.16 Operator, running on OpenShift Container Platform
Red Hat Security Advisory: Red Hat build of Keycloak 26.6.7 Images Security Update
New images are available for Red Hat build of Keycloak 26.6.7 and Red Hat build of Keycloak 26.6.7 Operator, running on OpenShift Container Platform
Red Hat Security Advisory: Red Hat Data Grid 8.6.3 security update
An update for Red Hat Data Grid 8 is now available. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.8 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1 for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.8 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1 for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.8 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1 for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.18.4 for Spring Boot release.
Red Hat build of Apache Camel 4.18.4 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 Com...
Red Hat Security Advisory: Red Hat build of Debezium 3.6.3 release
Red Hat build of Debezium connectors in version 3.6.3 are now available for Red Hat Application Foundations.
Red Hat Security Advisory: RHOAI 3.4.5 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.
Red Hat Security Advisory: RHOAI 2.25.12 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.
Red Hat Security Advisory: RHOAI 3.5.2 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Netty 4.2.0 through 4.2.16 TLS Hostname Verification Bypass

AFFECTED PACKAGES:
Unknown / Unknown
203 versions affected
ALIASES:
GHSA-p85m-gvr3-788c

> HISTORIQUE DES MODIFICATIONS

Première apparition
22/08/2026 13:16
Source: NVD
đź“Š ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-297: Improper Validation of Certificate with Host Mismatch - The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actu...
Total des modifications: 1 Dernière mise à jour: 1 month ago

> REFERENCES

https://github.com/netty/netty/security/advisories/GHSA-p85m-gvr3-788c
https://www.vulncheck.com/advisories/netty-through-tls-hostname-verification-byp...
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