CVE-2021-21903: Garrett Ic Module Cma

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability exists in the CMA check_udp_crc function of Garrett Metal Detectors’ iC Module CMA Version 5.0. A specially-crafted packet can lead to a stack-based buffer overflow during a call to strcpy. An attacker can send a malicious packet to trigger this vulnerability.

Affected products

• Garrett Ic Module Cma: version 5.0 only

Published 2021-12-22. Last modified 2026-06-17.