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How the mentioned CVE works:
This vulnerability exists in MediaTek modem firmware due to a logic error.
When a User Equipment (UE) like a smartphone connects to a rogue base station.
The rogue base station is controlled by an attacker.
It broadcasts crafted signals or messages to the UE.
The modem processes these malicious signals.
The logic error causes mishandling during signal processing.
This leads to an unstable state in the modem software.
Consequently, the modem experiences a system crash.
The crash results in remote denial of service.
Cellular communication is disrupted.
No user interaction is required for exploitation.
No additional execution privileges are needed.
The attacker simply operates a malicious base station.
The flaw is triggered upon connection.
Patch ID MOLY01673749 fixes the logic error.
It prevents the crash from occurring.
The issue is identified as MSV-4643.
It affects modem functionality directly.
Remote exploitation is feasible via network.
The vulnerability is critical for device availability.
Platform: MediaTek Modem
Version: Multiple versions
Vulnerability: Logic error crash
Severity: Critical
Date: 12/01/2025
Prediction: Patch available Dec 2025
What Undercode Say:
bash commands:
strings modem_firmware.bin
logcat | grep modem
dmesg | grep crash
adb shell dumpsys modem
cat /proc/modem_log
codes:
craft_malicious_signal.py
base_station_simulator.c
parse_modem_firmware.c
trigger_logic_error.c
how Exploit:
Set up rogue base station.
Broadcast crafted signals.
Connect vulnerable UE.
Trigger logic error.
Cause modem crash.
Denial of service.
Protection from this CVE
Apply patch MOLY01673749.
Update modem firmware.
Avoid untrusted base stations.
Impact:
Remote denial of service.
System crash.
Loss of connectivity.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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