CVE-2026-101003

Description

A weakness has been identified in Cesanta Mongoose up to 7.21. Affected by this vulnerability is the function fn of the file tutorials/mqtt/mqtt-server/main.c of the component MQTT Broker. Executing a manipulation can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 7.22 addresses this issue. This patch is called a9df523f76f43a38bd53b4232b9cfd4c16869e71. Upgrading the affected component is advised.

References

https://vuldb.com/vuln/410873/cti

https://vuldb.com/vuln/410873

https://vuldb.com/submit/920005

https://vuldb.com/cve/CVE-2026-101003

https://github.com/cesanta/mongoose/releases/tag/7.22

https://github.com/cesanta/mongoose/commit/a9df523f76f43a38bd53b4232b9cfd4c16869e71

https://github.com/cesanta/mongoose/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88089

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS