CVE-2021-41766

    Dashboard / Vulnerabilities / CVE-2021-41766

    CVE-2021-41766

    Published: 26 Jan 2022Last Modified: 9 Jul 2026

    Summary:

    Details: Apache Karaf allows monitoring of applications and the Java runtime by using the Java Management Extensions (JMX). JMX is a Java RMI based technology that relies on Java serialized objects for client server communication. Whereas the default JMX implementation is hardened against unauthenticated deserialization attacks, the implementation used by Apache Karaf is not protected against this kind of attack. The impact of Java deserialization vulnerabilities strongly depends on the classes that are available within the targets class path. Generally speaking, deserialization of untrusted data does always represent a high security risk and should be prevented. The risk is low as, by default, Karaf uses a limited set of classes in the JMX server class path. It depends of system scoped classes (e.g. jar in the lib folder).

    References: https://karaf.apache.org/security/cve-2021-41766.txt

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fa2562d583197ad41785a451144d58b148299858

    Affected versions

    karaf-4.3.5
    karaf-4.3.4
    karaf-4.3.3
    karaf-4.3.2
    karaf-4.3.1
    karaf-4.3.0
    karaf-4.3.0.RC1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-41766 | CVE-DB