CVE-2017-7650

CVE-2017-7650: vulnerability in Eclipse Foundation Mosquitto

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3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 2.5%
In Mosquitto before 1.4.12, pattern based ACLs can be bypassed by clients that set their username/client id to '#' or '+'. This allows locally or remotely connected clients to access MQTT topics that they do have the rights to. The same issue may be present in third party authentication/access control plugins for Mosquitto.
Related CVEs — Eclipse Foundation Mosquitto

In the same product, most dangerous first.