CVE-2022-21744

CVE-2022-21744 is a critical out-of-bounds write vulnerability affecting MediaTek's 2G RR modem, specifically when decoding GPRS Packet Neighbour Cell Data (PNCD) with improper neighboring cell size. This flaw allows for remote code execution without requiring user interaction or additional execution privileges. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or inclusion in CISA's KEV catalog, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.