Vulnerabilities

Vulnerability · CVE-2023-46604

Apache ActiveMQ Deserialization of Untrusted Data Vulnerability

Published Oct 27, 2023 · catalog updated Jun 16, 2026 · Apache ActiveMQ

Patch now

CVE-2023-46604 is in the CISA known-exploited catalog, due Nov 23, 2023. Confirm Apache ActiveMQ against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
99.89%
Remediation
Remediation guidance
Affected products
cpe apache/activemq · cpe apache/activemq legacy openwire module · cpe debian/debian linux · cpe netapp/e-series santricity unified manager · vendor Apache ActiveMQ

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/activemqversion unspecified
  • cpe apache/activemq legacy openwire moduleversion unspecified
  • cpe debian/debian linux10.0
  • cpe netapp/e-series santricity unified managerversion unspecified
  • vendor Apache ActiveMQversion unspecified

How to fix CVE-2023-46604

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-46604 is in the CISA known-exploited catalog, due Nov 23, 2023. Confirm Apache ActiveMQ against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data. EPSS 99.89%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 27, 2023 · Catalog

    Detected

    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 r

  2. Nov 2, 2023 · CISA KEV

    Known exploited

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

  3. Nov 23, 2023 · CISA KEV

    Remediation due

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

  4. Jun 16, 2026 · Catalog

    Updated

    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 r

Sources

  • CISA Cybersecurity AdvisoriesGovernment advisoryCVE-2023-46604

    View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to gain unauthorized access to the database, execute arbitrary code on the host with the highest level of privilege, or gain control of the physical access-control system. The following ver

    cisa.gov
  • CISA ICS AdvisoriesGovernment advisoryCVE-2023-46604

    View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to gain unauthorized access to the database, execute arbitrary code on the host with the highest level of privilege, or gain control of the physical access-control system. The following ver

    cisa.gov
  • CISA KEVConfirmed exploitationCVE-2023-46604

    Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the classpath.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-46604

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-46604

    30-day exploitation probability 99.9%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_multi/misc/apache_activemq_rce_cve_2023_46604

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2023-46604

    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 OpenW

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttps://packetstormsecurity.com/files/175676/Apache-ActiveMQ-Unauthenticated-Remote-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2023-46604

    Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the cl

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.