# CVE-2023-46604: activemq: The Java OpenWire protocol marshaller is vulnerable to Remote Code  Execution

CVE-2023-46604 is fixed in 2 products on 1 platform, first by activemq 5.16.1-1ubuntu0.1~esm1, released October 27, 2023. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 2, 2023, with known ransomware use. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/cve/CVE-2023-46604
- Priority: Patch now
- CVSS: 9.8 (critical)
- EPSS: 0.9999
- CISA KEV: listed Nov 2, 2023, federal due date Nov 23, 2023, known ransomware use
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 27, 2023

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | activemq Debian 12.15 (bookworm) | 5.17.2+dfsg-2+deb12u1 | [DEBIAN-CVE-2023-46604](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46604.md) | Oct 27, 2023 |
| Linux | activemq Debian 13.5 (trixie) | 5.17.6+dfsg-1 | [DEBIAN-CVE-2023-46604](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46604.md) | Oct 27, 2023 |
| Linux | activemq Ubuntu 18.04.6 LTS (bionic) | 5.15.8-2~18.04.1~esm1 | [activemq 5.15.8-2~18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-activemq-5.15.8-2-18.04.1-esm1.md) | Nov 28, 2023 |
| Linux | activemq Ubuntu 20.04 LTS (focal) | 5.15.11-1ubuntu0.1~esm1 | [activemq 5.15.11-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-activemq-5.15.11-1ubuntu0.1-esm1.md) | Nov 28, 2023 |
| Linux | activemq Ubuntu 22.04.1 LTS (jammy) | 5.16.1-1ubuntu0.1~esm1 | [activemq 5.16.1-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-activemq-5.16.1-1ubuntu0.1-esm1.md) | Oct 27, 2023 |
| Linux | libactivemq-java Ubuntu 18.04.6 LTS (bionic) | 5.15.8-2~18.04.1~esm1 | [libactivemq-java 5.15.8-2~18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libactivemq-java-5.15.8-2-18.04.1-esm1.md) | Nov 28, 2023 |
| Linux | libactivemq-java Ubuntu 20.04 LTS (focal) | 5.15.11-1ubuntu0.1~esm1 | [libactivemq-java 5.15.11-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libactivemq-java-5.15.11-1ubuntu0.1-esm1.md) | Nov 28, 2023 |
| Linux | libactivemq-java Ubuntu 22.04.1 LTS (jammy) | 5.16.1-1ubuntu0.1~esm1 | [libactivemq-java 5.16.1-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libactivemq-java-5.16.1-1ubuntu0.1-esm1.md) | Oct 27, 2023 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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