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Vulnerabilities

Vulnerability · CVE-2025-65953

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform.

Published Nov 25, 2025 · catalog updated Nov 26, 2025 · NanoMQ MQTT Broker (NanoMQ)

Last checked Oct 28, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-65953. EPSS is 0.24%. Act only if a listed version of NanoMQ MQTT Broker (NanoMQ) is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (NanoMQ MQTT Broker (NanoMQ)).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.24%
Remediation
Version ranges on file
Affected products
vendor nanomq nanomq < 0.22.5

NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.22.5, a Heap-Use-After-Free (UAF) vulnerability exists in the TCP transport component of NanoMQ, which relies on the underlying NanoNNG library (specifically in src/sp/transport/mqtt/broker_tcp.c). The vulnerability is due to improper resource management and premature cleanup of message and pipe structures under specific malformed MQTTV5 retain message traffic conditions. This issue has been patched in version 0.22.5.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor nanomq nanomq < 0.22.5< 0.22.5

How to fix CVE-2025-65953

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-65953. EPSS is 0.24%. Act only if a listed version of NanoMQ MQTT Broker (NanoMQ) is installed.

Which versions are affected?

Compare what you have installed with nanomq nanomq < 0.22.5 < 0.22.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 25, 2025 · EUVD

    Detected

    NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.22.5, a Heap-Use-After-Free (UAF) vulnerability exists in the TCP transport component of NanoMQ, which relies on the underlying NanoNNG library (specifically in src/sp/transport/mqtt/broker_tcp.c). The vulnerability is due to improper resource management and premature cleanup of message and pipe structures und

  2. Nov 26, 2025 · EUVD

    Updated

    NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.22.5, a Heap-Use-After-Free (UAF) vulnerability exists in the TCP transport component of NanoMQ, which relies on the underlying NanoNNG library (specifically in src/sp/transport/mqtt/broker_tcp.c). The vulnerability is due to improper resource management and premature cleanup of message and pipe structures und

Sources

  • CVE.orgVulnerability recordCVE-2025-65953

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-65953

    30-day exploitation probability 0.24%

    first.org
  • EUVDVulnerability recordEUVD-2025-199658

    NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.22.5, a Heap-Use-After-Free (UAF) vulnerability exists in the TCP transport component of NanoMQ, which relies on the underlying NanoNNG library (specifically in src/sp/transport/mqtt/broker_t

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 28, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 28, 2026
  • CVE.orgOct 28, 2026
  • EUVDOct 28, 2026