> CVE-2025-66566 [HIGH]

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PUBLISHED
2025-12-05 18:15
MODIFIED
2025-12-05 18:15
CVSS_SCORE V3
8.2
EPSS (Prob. Exploit)
0.61%
Top 51.6%
DATA SOURCES:
NVD 🔗 2025-12-05 CVE PROJECT 🔗 2026-01-19 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 OSV 🔗 2026-03-01

> DESCRIPTION

yawkat LZ4 Java provides LZ4 compression for Java. Insufficient clearing of the output buffer in Java-based decompressor implementations in lz4-java 1.10.0 and earlier allows remote attackers to read previous buffer contents via crafted compressed input. In applications where the output buffer is reused without being cleared, this may lead to disclosure of sensitive data. JNI-based implementations are not affected. This vulnerability is fixed in 1.10.1.

> 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:P/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:P/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-201

> CWE DETAILED DESCRIPTIONS

CWE-201: Insertion of Sensitive Information Into Sent Data - The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: Red Hat build of Quarkus 3.20.4.SP1 security update
An update is now available for Red Hat build of Quarkus. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base sco...
Red Hat Security Advisory: Red Hat build of Quarkus 3.27.1.SP1 security update
An update is now available for Red Hat build of Quarkus. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base sco...
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.14.2.P1 for Spring Boot release.
Red Hat build of Apache Camel 4.14.2 for Spring Boot patch 1 release and security update is now available. Red Hat Product Security has rated this update as having a security impact of Important. A C...
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.14 for Quarkus 3.27 update is now available (RHBQ 3.27.1.SP1)
An update for Red Hat Build of Apache Camel 4.14 for Quarkus 3.27 update is now available (RHBQ 3.27.1.SP1). The purpose of this text-only errata is to inform you about the enhancements that improve y...
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.10 for Quarkus 3.20 update is now available (RHBQ 3.20.4.SP1)
An update for Red Hat Build of Apache Camel 4.10 for Quarkus 3.20 update is now available (RHBQ 3.20.4.SP1). The purpose of this text-only errata is to inform you about the enhancements that improve y...
Red Hat Security Advisory: Red Hat build of Cryostat security update
An update is now available for the Red Hat build of Cryostat 4 on RHEL 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring Syste...
Red Hat Security Advisory: jmc security update
An update for jmc is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS...
Red Hat Security Advisory: jmc security update
An update for jmc is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerab...
Red Hat Security Advisory: JMC bug fix and enhancement update
An update for JDK Mission Control (JMC) is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.4 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 8.1.4 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 JBoss Enterprise Application Platform 8.1.4 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1. 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 8.1.4 XP 6.0.2.GA release
JBoss EAP XP 6.0.2.GA release on the EAP 8.1 base. See references for release notes.
Red Hat Security Advisory: JBoss EAP XP 5.0 Update 4.0 release. See references for release notes.
JBoss EAP XP 5.0 Update 4.0 release. See references for release notes.
Red Hat Security Advisory: jmc security update
An update for jmc is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS...

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

yawkat LZ4 Java has a possible information leak in Java safe decompressor

AFFECTED PACKAGES:
Unknown / Unknown
11 versions affected
ALIASES:
GHSA-cmp6-m4wj-q63q

> HISTORIQUE DES MODIFICATIONS

Première apparition
05/12/2025 18:15
Source: NVD
📊 ENRICHISSEMENT 19/01/2026 17:37
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 01/01/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-201: Insertion of Sensitive Information Into Sent Data - The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that ac...
Total des modifications: 2 Dernière mise à jour: 9 months ago

> REFERENCES

https://github.com/yawkat/lz4-java/commit/33d180cb70c4d93c80fb0dc3ab3002f457e938...
https://github.com/yawkat/lz4-java/security/advisories/GHSA-cmp6-m4wj-q63q
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