CVE-2024-42655

8.8 highEPSS 0.4%

High (8.8) in emqx nanomq. EPSS 0.4% chance of exploitation in the next 30 days.

An access control issue in NanoMQ v0.21.10 allows attackers to bypass security restrictions and access sensitive system topic messages using MQTT wildcard characters.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2025-07-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

emqx:nanomq

References

https://github.com/nanomq/nanomq
https://github.com/nanomq/nanomq/issues/1782#issuecomment-2171025812
https://github.com/songxpu/bug_report/blob/master/MQTT/NanoMQ/CVE-2024-42655.md

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