Unisoc VoLTE Video Call Exploit Chain Can Give Attackers Full Android Kernel Access

Summary: SSD Secure Disclosure published a two-stage exploit chain on August 17, 2026 that achieves full Android kernel access on devices running Unisoc modem firmware via a VoLTE video call, building on a March 2026 remote code execution flaw in the same firmware. The privilege-escalation flaw, classified CWE-1189 with no CVE assigned, resides in modem firmware shared by at least three Unisoc chipsets including the T606 in the Motorola E13, the T612 in the Realme C33, and the T7250 in the Xiaomi Redmi A5, and SSD says Unisoc has not responded to outreach through email and LinkedIn.
Bottom line: Unisoc supplies Motorola, Realme, and Xiaomi devices sold in more than 140 countries, and there is no patch or mitigation: the August 2026 Android Security Bulletin does not address the flaw and no UNISOC bulletin covers it, leaving device owners waiting on a firmware update that has not been committed to.

Read the original at The Hacker News ↗

Topics: Vulnerabilities & Patching
Mentions: CVE-2025-31718
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