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CVE-2023-46604

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

Critical10.0Known exploitedEPSS 100.0%
Published
Updated
Reserved
Assigned by
apache

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.

Exploited in the wild

CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Apache ActiveMQ Deserialization of Untrusted Data Vulnerability.

Added
2 Nov 2023
Fix due (US federal)
23 Nov 2023
Used by ransomware
Known

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

Scores

CVSS scores of CVE-2023-46604, by who scored it
Scored byCVSSScoreVector
apacheCNA (assigner)3.1Critical10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
NVDNVD · Analyzed3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
100.0% · top 0.1% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: active · Automatable: yes · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 10.0.

Weakness

Affected products

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (8)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .