Unisoc VoLTE Video Call Exploit Chain Can Give Attackers Full Android Kernel Access
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Security researchers at SSD Secure Disclosure disclosed a two-stage exploit chain that enables full Android kernel access on devices using Unisoc modem firmware via a VoLTE video call. The chain begins with a remote code execution vulnerability in the modem firmware (disclosed in March 2026), followed by a privilege escalation exploit that leverages improper isolation of shared resources (CWE-1189) to gain kernel-level access. The attacker must control a private 4G network and trick the victim into answering a video call. No CVE has been assigned, and no patch is available from Unisoc or device manufacturers. The vulnerability affects multiple Unisoc chipsets used in Motorola, Realme, and Xiaomi devices.
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