Background exploitation KEV catalog No authentication
CVE-2023-33246

Apache RocketMQ Command Execution Vulnerability

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…

CheckOps priority index
9.2/10 Patch within 24 h
Severity9.8
Probability9.7
Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 96.6% higher than 99.9% of CVEs
CVSS 3.1 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:
Exploited for 1,154 days 06 Sept 2023
CISA due date 27 Sept 2023 for US federal agencies

Exploitation probability EPSS · FIRST

05010026 Sep05 Oct15 Oct24 Oct02 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

  • KEV catalog (CISA)06 Sept 2023
  • Exploited in EUVD (ENISA)06 Sept 2023
  • Used by ransomwareno
  • EPSS above 10 %96.6%
  • No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

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

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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 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 .

Affected products

Apache RocketMQRocketMQ
Affected versions
  • 0 ≤5.1.0
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

  5. EPSS peak: 96.6%

References

Other exploited vulnerabilities from the same vendor

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  • CVE-2026-34486Apache Tomcat Missing Encryption of Sensitive Data Vulnerability
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  • CVE-2026-34197Apache ActiveMQ Improper Input Validation Vulnerability
    8.3 · Background exploitation
  • CVE-2024-38475Apache HTTP Server Improper Escaping of Output Vulnerability
    9.0 · Background exploitation
  • CVE-2025-24813Apache Tomcat Path Equivalence Vulnerability
    9.4 · Background exploitation
  • CVE-2024-45195Apache OFBiz Forced Browsing Vulnerability
    9.3 · Background exploitation

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities