SECURITY ADVISORY DOSSIER
CVE-2021-45464
CVSS 9.8CRITICAL
Baseband Modulated RF Packet Parsing Memory Corruption
Vulnerability Overview
Heap buffer overflow in LTE/5G baseband PHY layer RRC connection reconfiguration processing allows remote over-the-air arbitrary code execution via malicious base station broadcasts.
Affected Telecom Components
⚡ Baseband Firmware ⚡ RRC Layer ⚡ PHY Modem Stack ⚡ Qualcomm/MediaTek Baseband
Recommended Mitigation Guidelines
Apply vendor modem patch update, enable ASLR/DEP in baseband RTOS, and enforce strict length bounds during RRC ASN.1 decoding.