How severe is CVE-2023-46604?

CVE-2023-46604 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.

Is CVE-2023-46604 being actively exploited?

Yes. CVE-2023-46604 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-11-02, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2023-46604?

CVE-2023-46604 primarily affects Apache Activemq. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-46604?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2023-46604 have an EU (EUVD) identifier?

Yes. CVE-2023-46604 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-2719. It is also flagged as exploited in the EUVD (since 2023-11-02).

When was CVE-2023-46604 published?

CVE-2023-46604 was published on 2023-10-27 and last updated on 2026-06-17.

CVE-2023-46604

CVE-2023-46604 is a critical-severity vulnerability in Apache Activemq with a CVSS 3.x base score of 10.0. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2023-11-02). The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 100% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2023-11-02)
EU (EUVD) id: EUVD-2023-2719
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2023-11-02)
Weakness: CWE-502
Affected product: Apache Activemq
Published: 2023-10-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-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 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.
How severe is CVE-2023-46604?: CVE-2023-46604 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
Is CVE-2023-46604 being actively exploited?: Yes. CVE-2023-46604 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-11-02, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2023-46604?: CVE-2023-46604 primarily affects Apache Activemq. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-46604?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2023-46604 have an EU (EUVD) identifier?: Yes. CVE-2023-46604 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-2719. It is also flagged as exploited in the EUVD (since 2023-11-02).
When was CVE-2023-46604 published?: CVE-2023-46604 was published on 2023-10-27 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:activemq_legacy_openwire_module:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:a:netapp:e-series_santricity_unified_manager:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:e-series_santricity_web_services_proxy:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:santricity_storage_plugin:-:*:*:*:*:vcenter:*:*

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