CVE-2021-21903

PoC —

CVSS 3.1

9.8 critical

EPSS

2%p76

Published

Dec 22, 2021 (Dec 22, 2021)

Modified

Jun 17, 2026

Description

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.

Vendors: garrett
Products: ic module cma
Weakness: CWE-120, CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.7%)

In the news2 stories

Vulnerability Spotlight: Vulnerabilities in metal detector peripheral could allow attackers to manipulate security devices

Cisco TalosDec 20, 16:11 UTC · Dec 20, 2021Vulnerability in the wildCVE-2021-21901 CVE-2021-21903 CVE-2021-21905+6 CVEs

Garrett Walk-Through Metal Detectors Can Be Hacked Remotely

The Hacker NewsDec 28, 09:32 UTC · Dec 28, 2021Vulnerability CVE-2021-21901 CVE-2021-21903 CVE-2021-21905+6 CVEs