CVE-2023-46604

Known Exploited Public Exploit
Apache ActiveMQ, Apache ActiveMQ Legacy OpenWire Module: Unbounded deserialization causes ActiveMQ to be vulnerable to a remote code execution (RCE) attack

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.

Category

10.0
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 94.44% Top 5%
KEV Since 
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache ActiveMQ
Affected: Apache Software Foundation Apache ActiveMQ Legacy OpenWire Module
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2023-46604?
CVE-2023-46604 has been scored as a critical severity vulnerability.
How to fix CVE-2023-46604?
To fix CVE-2023-46604, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-46604 being actively exploited in the wild?
It is confirmed that CVE-2023-46604 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-46604?
CVE-2023-46604 affects Apache Software Foundation Apache ActiveMQ, Apache Software Foundation Apache ActiveMQ Legacy OpenWire Module.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.