CVE-2023-33657

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-06-08 · updated 2026-06-17
Weakness: CWE-416

Description

A use-after-free vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function nni_mqtt_msg_get_publish_property() in the file mqtt_msg.c. This vulnerability is caused by improper data tracing, and an attacker could exploit it to cause a denial of service attack.

Affected products

nanomq: 0.17.2

References

https://github.com/emqx/nanomq
https://github.com/emqx/nanomq/issues/1165#issue-1668648319
https://github.com/emqx/nanomq/pull/1187
https://github.com/emqx/nanomq
https://github.com/emqx/nanomq/issues/1165#issue-1668648319
https://github.com/emqx/nanomq/pull/1187

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