# CVE-2023-46604: Apache ActiveMQ, Apache ActiveMQ Legacy OpenWire Module: Unbounded deserialization causes ActiveMQ to be vulnerable to a remote code execution (RCE) attack

> CVE-2023-46604: Apache ActiveMQ, Apache ActiveMQ Legacy OpenWire Module: Unbounded deserialization causes ActiveMQ to be vulnerable to a remote code execution (RCE) attack. CVSS 10.0 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2023-46604
Last updated: 2025-11-03T21:50:00Z

- Published: 2023-10-27 14:59 UTC · Updated: 2025-11-03 21:50 UTC · Assigner: apache
- CVSS: 10.0 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
- EPSS: 99.9%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-11-02, federal due date 2023-11-23, ransomware use: Known
- CWE: CWE-502

## 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.

## CISA required action

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

## Affected vendors and products

- Apache Software Foundation: Apache ActiveMQ
- Apache Software Foundation: Apache ActiveMQ Legacy OpenWire Module

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-46604)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2023-46604)
- [https://activemq.apache.org/security-advisories.data/CVE-2023-46604-announcement.txt](https://activemq.apache.org/security-advisories.data/CVE-2023-46604-announcement.txt)
- [http://seclists.org/fulldisclosure/2024/Apr/18](http://seclists.org/fulldisclosure/2024/Apr/18)
- [https://lists.debian.org/debian-lts-announce/2023/11/msg00013.html](https://lists.debian.org/debian-lts-announce/2023/11/msg00013.html)
- [https://packetstormsecurity.com/files/175676/Apache-ActiveMQ-Unauthenticated-Remote-Code-Execution.html](https://packetstormsecurity.com/files/175676/Apache-ActiveMQ-Unauthenticated-Remote-Code-Execution.html)
- [https://security.netapp.com/advisory/ntap-20231110-0010/](https://security.netapp.com/advisory/ntap-20231110-0010/)
- [https://www.openwall.com/lists/oss-security/2023/10/27/5](https://www.openwall.com/lists/oss-security/2023/10/27/5)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2023-46604 · Markdown: https://rewindex.com/cve/CVE-2023-46604.md · JSON: https://rewindex.com/api/v1/cves/CVE-2023-46604 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:34.189Z