CASCACascade Atlas

Evidence dossier

CVE-2023-46604

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

84.5–100.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Oct 27, 2023
Updated
Nov 3, 2025
Evidence coverage
85%
CISA KEVCatalog member

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

FIRST EPSS99.65%

2026-07-18 · v2026.06.15 · percentile 99.9%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

apacheoriginal assertion
container

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

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

CISA KEVoriginal assertion
observed_exploitation

Apache ActiveMQ Deserialization of Untrusted Data Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.996540000000; percentile 0.999480000000

Applicability

Cited product scope

Trace impact →
Apache Software FoundationApache ActiveMQ
[{"status": "affected", "version": "5.18.0", "lessThan": "5.18.3", "versionType": "semver"}, {"status": "affected", "version": "5.17.0", "lessThan": "5.17.6", "versionType": "semver"}, {"status": "affected", "version": "5.16.0", "lessThan": "5.16.7", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "5.15.16", "versionType": "semver"}]unknown
Apache Software FoundationApache ActiveMQ Legacy OpenWire Module
[{"status": "affected", "version": "5.18.0", "lessThan": "5.18.3", "versionType": "semver"}, {"status": "affected", "version": "5.17.0", "lessThan": "5.17.6", "versionType": "semver"}, {"status": "affected", "version": "5.16.0", "lessThan": "5.16.7", "versionType": "semver"}, {"status": "affected", "version": "5.8.0", "lessThan": "5.15.16", "versionType": "semver"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*; end excluding 5.15.16supported
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*; start including 5.16.0; end excluding 5.16.7supported
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*; start including 5.17.0; end excluding 5.17.6supported
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*; start including 5.18.0; end excluding 5.18.3supported
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq_legacy_openwire_module:*:*:*:*:*:*:*:*; end excluding 5.15.16supported
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq_legacy_openwire_module:*:*:*:*:*:*:*:*; start including 5.16.0; end excluding 5.16.7supported
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq_legacy_openwire_module:*:*:*:*:*:*:*:*; start including 5.17.0; end excluding 5.17.6supported
Unknown vendorUnknown product
cpe:2.3:a:apache:activemq_legacy_openwire_module:*:*:*:*:*:*:*:*; start including 5.18.0; end excluding 5.18.3supported
Unknown vendorUnknown product
cpe:2.3:a:netapp:e-series_santricity_unified_manager:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:netapp:e-series_santricity_web_services_proxy:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:netapp:santricity_storage_plugin:-:*:*:*:*:vcenter:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

9.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0
security@apache.orgCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
10.0
apacheCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.