CISA KEV · Known exploitedCritical

CVE-2023-46604

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.

CVSS: 9.8
EPSS: 99.7%
CISA KEV: Listed
Published: 2023.10.28

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability99.7%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Apache ActiveMQ
Affected versions: 5.18.0, 5.17.0, 5.16.0, 5.8.0, < 5.15.16, >= 5.16.0 < 5.16.7, >= 5.17.0 < 5.17.6, >= 5.18.0 < 5.18.3, 10.0, 11.0
Fixed versions: 5.15.16, 5.16.7, 5.17.6, 5.18.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

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

Due date: 2023.11.23

1
Identify
Confirm that Apache ActiveMQ and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-502
KEV added: 2023.11.02
Ransomware use: 확인됨