CVE-2021-21901

Name: CVE-2021-21901
Creator: NVD / NIST
Published: 2021-12-22T19:15:09.63+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.53%

Last modified Jun 17, 2026

CVE-2021-21901 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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 memcpy. EPSS estimates a 1.53% chance of exploitation in the next 30 days.

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 memcpy. An attacker can send a malicious packet to trigger this vulnerability.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.53%

71.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Garrett	Ic Module Cma	5.0

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1353Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1353Exploit, Third Party Advisory

Timeline

Published: Dec 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21901?

How severe is CVE-2021-21901?

CVE-2021-21901 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21901?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21901?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST