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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…

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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 10.0 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
9.0/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 10: +1.50
  • Fresh EPSS: 99.99%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 17 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

CyberSecurityNews
Press · 25 Feb 2026, 08:00 · Threat Actors Exploit Apache ActiveMQ Server Vulnerability to Gain RDP Access and Deploy LockBit Ransomware - CyberSecurityNews
The Hacker News
Press · 17 Jul 2025, 07:00 · Hackers Exploit Apache HTTP Server Flaw to Deploy Linuxsys Cryptocurrency Miner - The Hacker News
wiz.io
Press · 21 May 2025, 03:23 · CVE-2023-46604 Impact, Exploitability, and Mitigation Steps - wiz.io
The Hacker News
Press · 22 Jan 2025, 08:00 · Oracle Releases January 2025 Patch to Address 318 Flaws Across Major Products - The Hacker News
Industrial Cyber
Press · 10 May 2024, 07:00 · US CISA issues ICS advisories on hardware vulnerabilities in Rockwell Automation, alpitronic, Delta Electronics - Industrial Cyber
See all 17 source documents
Cybersecurity Insiders
Press · 09 Apr 2024, 07:00 · The Threat That Can’t Be Ignored: CVE-2023-46604 in Apache ActiveMQ - Cybersecurity Insiders
Broadcom
Press · 13 Feb 2024, 08:00 · Protection Highlight: Apache ActiveMQ Vulnerability (CVE-2023-46604) Still Being Exploited - Broadcom
Security Affairs
Press · 22 Jan 2024, 08:00 · Threat actors exploit Apache ActiveMQ flaw to deliver the Godzilla Web Shell - Security Affairs
Help Net Security
Press · 21 Nov 2023, 08:00 · Apache ActiveMQ bug exploited to deliver Kinsing malware - Help Net Security
www.trendmicro.com
Press · 20 Nov 2023, 08:00 · CVE-2023-46604 (Apache ActiveMQ) Vulnerability Exploited to Infect Systems With Cryptominers and Rootkits - www.trendmicro.com
www.trendmicro.com
Press · 20 Nov 2023, 08:00 · CVE-2023-46604 (Apache ActiveMQ) Exploited to Infect Systems With Cryptominers and Rootkits - www.trendmicro.com
CyberSecurityNews
Press · 06 Nov 2023, 08:00 · HelloKitty Ransomware Exploiting Apache ActiveMQ Flaw - CyberSecurityNews
Arctic Wolf
Press · 03 Nov 2023, 07:00 · CVE-2023-46604: Critical RCE Vulnerability in Apache ActiveMQ - Arctic Wolf
Arctic Wolf
Press · 03 Nov 2023, 07:00 · Exploitation of CVE-2023-46604 Leading to Ransomware - Arctic Wolf
Huntress
Press · 02 Nov 2023, 07:00 · Critical Vuln: Apache ActiveMQ CVE-2023-46604 Exploited - Huntress
SOC Prime
Press · 02 Nov 2023, 07:00 · CVE-2023-46604 Detection: HelloKitty Ransomware Maintainers Exploits RCE Vulnerability in Apache ActiveMQ - SOC Prime
Rapid7
Press · 01 Nov 2023, 07:00 · Suspected Exploitation of Apache ActiveMQ CVE-2023-46604 - Rapid7

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 9.0 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

4

Public exploit entries / repo candidates

See 4 repos with metrics
RepositoryStarsForksLanguageUpdated
RockyDesigne/SSP-Assignment-3-RCEYouLater20Python10 Jan 2026, 09:33
basesixtythree/B63-POC-CVE-2023-4660410Python22 Oct 2026, 11:51
Bhanunamikaze/ActiveMQ-CVE-2023-4660400Python01 Sep 2026, 11:37
vjayant93/CVE-2023-46604-POC00—16 Nov 2023, 21:21
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 10; EPSS 100.0%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:00.365953+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
27 Oct 2023, 14:59
First press mention
01 Nov 2023, 07:00
Added to the CISA KEV catalog
02 Nov 2023, 00:00
Latest press mention
25 Feb 2026, 08:00
Score calculated
05 Nov 2026, 13:59
PoCs on GitHub
4 repositories