Security Resilience

CVE-2023-33246

RCE in Apache Rocketmq ≤ 4.9.6

CISA KEVActive ExploitationEUVD ExploitedPublic PoCRCE
Published
24 May 2023
Modified
23 October 2025
KEV Added
06 September 2023
Patch / advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.97 99.9th percentile
Risk Priority 97 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-33246 is a critical-severity Code Injection (CWE-94) vulnerability in Apache Rocketmq. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 0.1% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-33246 is a remote code execution vulnerability affecting Apache RocketMQ versions 5.1.0 and earlier. It stems from exposed NameServer, Broker, and Controller components that lack authentication and authorization checks, combined with an unauthenticated update configuration function and the ability to forge RocketMQ protocol messages. The flaw is classified under CWE-94 and carries a CVSS 3.1 score of 9.8.

An unauthenticated remote attacker who can reach the affected components over the network can invoke the configuration update mechanism or craft malicious protocol packets to execute arbitrary commands with the privileges of the user running RocketMQ. This grants full control over the message-broker processes and any data or systems they can access.

Apache advisories and the referenced OSS-Security disclosure recommend immediate upgrade to RocketMQ 5.1.1 or newer for the 5.x branch and 4.9.6 or newer for the 4.x branch. Public exploit code has been posted to Packet Storm, and the vulnerability appears on the oss-security mailing list.

The associated EPSS score remains persistently high, with a current value of 0.9439 and a recorded peak of 0.9736.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

For RocketMQ versions 5.1.0 and below, under certain conditions, there is a risk of remote command execution. Several components of RocketMQ, including NameServer, Broker, and Controller, are leaked on the extranet and lack permission verification, an attacker can exploit this…

more

vulnerability by using the update configuration function to execute commands as the system users that RocketMQ is running as. Additionally, an attacker can achieve the same effect by forging the RocketMQ protocol content. To prevent these attacks, users are recommended to upgrade to version 5.1.1 or above for using RocketMQ 5.x or 4.9.6 or above for using RocketMQ 4.x .

CWE(s)
KEV Date Added
06 September 2023

Related Threats

Threat-Actor AttributionAI

Google LLC (civil insider-recruitment defendant)
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
Microsoft Corp. (Salesforce / Slack engineer recruitment claims)
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
AnonOps
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
Storm-0530
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
Maui ransomware
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
l group
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-37582Same product: Apache Rocketmq
CVE-2012-0391Same vendor: Apacheboth on KEV
CVE-2026-34197Same vendor: Apacheboth on KEV
CVE-2019-0193Same vendor: Apacheboth on KEV
CVE-2025-30067Same vendor: Apache
CVE-2024-31864Same vendor: Apache
CVE-2026-49845Same vendor: Apache
CVE-2026-25077Same vendor: Apache
CVE-2023-34468Same vendor: Apache
CVE-2023-50379Same vendor: Apache

Affected Assets

apache
rocketmq
≤ 4.9.6 · 5.0.0 — 5.1.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

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Detect
Catch it (NIST detect / respond)

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Harden
Shrink the surface (DISA STIG)

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Validate
Prove the fix (OWASP ASVS)
  • V1.3.1

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-94

Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.

addresses: CWE-94

Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.

addresses: CWE-94

Validates inputs used in dynamic code generation to block injected directives.

addresses: CWE-94

Directly prevents execution of attacker-supplied code written into data memory regions.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
blocks

PR.PS-06's SDLC practices directly target injection flaws via secure coding and testing (mostly), yet as a single broad outcome it leaves many code-generation specifics unaddressed (partial).

PR.DS-10 none match
blocks

PR.DS-10 protects runtime data confidentiality/integrity but has no bearing on neutralizing externally influenced input during code generation, so neither direction shows any preventive effect.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

removes
removes
removes
removes
removes

References