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How the mentioned CVE works:
This vulnerability exists within the MediaTek modem firmware’s error handling routines. When a User Equipment (UE), such as a mobile phone, connects to a malicious rogue base station (gNodeB) controlled by an attacker, the base station can transmit specially crafted radio resource control (RRC) signaling messages. The modem software fails to properly validate or manage error conditions arising from these malformed network packets. This incorrect handling leads to an uncaught exception or memory corruption within the modem’s real-time operating system. Consequently, the modem subsystem experiences a fatal error, triggering a full system crash or kernel panic, forcibly rebooting the device. No user interaction or elevated privileges are required; exploitation occurs silently upon radio connection to the hostile cell.
DailyCVE Form
Platform: MediaTek Modem
Version: Pre MOLY01661189
Vulnerability: Improper Error Handling
Severity: Critical
Date: December 2025
Prediction: Patch expected ~December 15, 2025
What Undercode Say:
$ adb shell dmesg | grep -i "modem crash" $ adb logcat -b radio | grep -A5 -B5 "RRC" Simulating malformed RRC signaling for fuzzing send(packet, malformed_rrc_message, sizeof(malformed_rrc_message));
How Exploit:
Attacker operates rogue base station. Victim device connects automatically. Rogue station sends malformed RRC messages. Modem crashes, causing device reboot.
Protection from this CVE
Apply vendor patch. Disable automatic network selection. Use mobile security monitoring.
Impact:
Remote Denial of Service. Persistent device reboot loop. Loss of device functionality.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
