An issue was discovered on Xiaomi DGNWG03LM, ZNCZ03LM, MCCGQ01LM, RTCGQ01LM devices. Attackers can utilize the "discover ZigBee network procedure" to perform a denial of service attack.
https://github.com/chengcheng227/CVE-POC/blob/master/CVE-2019-15915.md