CVE-2023-46604

CRITICAL10.0

CISA KEV

Published 2023-10-27 · Updated 2026-06-17 · Source security@apache.org

Summary

CVE-2023-46604 is a critical-severity (CVSS 10.0) vulnerability in Apache ActiveMQ. CISA added it to the Known Exploited Vulnerabilities catalog on November 2, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by November 23, 2023. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. Apache has 41 vulnerabilities in the KEV catalog, 8 of them linked to ransomware.

All 41 known-exploited Apache vulnerabilities →

Description

The Java OpenWire protocol marshaller is vulnerable to Remote Code Execution. This vulnerability may allow a remote attacker with network access to either a Java-based OpenWire broker or client to run arbitrary shell commands by manipulating serialized class types in the OpenWire protocol to cause either the client or the broker (respectively) to instantiate any class on the classpath. Users are recommended to upgrade both brokers and clients to version 5.15.16, 5.16.7, 5.17.6, or 5.18.3 which fixes this issue.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H

CWE-502

CISA Known-Exploited Vulnerability

Product: Apache — ActiveMQ

Name: Apache ActiveMQ Deserialization of Untrusted Data Vulnerability

Date added: 2023-11-02 · Due: 2023-11-23

USED IN RANSOMWARE

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

References

View on NVD

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