CVE-2026-79393A heap-based buffer overflow vulnerability in the WS-Addressing Action transformation function in the Sofia IPC daemon in Xiongmai IP Camera XM530 firmware HMT.CM2005-v220608.1837 and earlier allows remote unauthenticated attackers to cause a denial of service or potentially execute arbitrary code via a crafted SOAP request containing a wsa5:Action string exceeding 128 bytes.