How severe is CVE-2021-21902?

CVE-2021-21902 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21902 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21902?

CVE-2021-21902 affects Garrett Ic Module Cma. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21902?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-21902 published?

CVE-2021-21902 was published on 2021-12-22 and last updated on 2026-06-17.

CVE-2021-21902

CVE-2021-21902 is a high-severity vulnerability in Garrett Ic Module Cma with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Garrett Ic Module Cma
Published: 2021-12-22
Last modified: 2026-06-17

Description

An authentication bypass vulnerability exists in the CMA run_server_6877 functionality of Garrett Metal Detectors iC Module CMA Version 5.0. A properly-timed network connection can lead to authentication bypass via session hijacking. An attacker can send a sequence of requests to trigger this vulnerability.

Frequently asked questions

What is CVE-2021-21902?: An authentication bypass vulnerability exists in the CMA run_server_6877 functionality of Garrett Metal Detectors iC Module CMA Version 5.0. A properly-timed network connection can lead to authentication bypass via session hijacking. An attacker can send a sequence of requests to trigger this vulnerability.
How severe is CVE-2021-21902?: CVE-2021-21902 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21902 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21902?: CVE-2021-21902 affects Garrett Ic Module Cma. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21902?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-21902 published?: CVE-2021-21902 was published on 2021-12-22 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1354

Affected products (1)

cpe:2.3:o:garrett:ic_module_cma:5.0:*:*:*:*:*:*:*

More vulnerabilities in Garrett Ic Module Cma

CVE-2021-21903 — Critical (CVSS 9.8): A stack-based buffer overflow vulnerability exists in the CMA check_udp_crc function of Garrett Metal Detectors’ iC…
CVE-2021-21901 — High (CVSS 8.8): A stack-based buffer overflow vulnerability exists in the CMA check_udp_crc function of Garrett Metal Detectors’ iC…
CVE-2021-21906 — High (CVSS 7.2): Stack-based buffer overflow vulnerability exists in how the CMA readfile function of Garrett Metal Detectors iC Module…
CVE-2021-21905 — High (CVSS 7.2): Stack-based buffer overflow vulnerability exists in how the CMA readfile function of Garrett Metal Detectors iC Module…
CVE-2021-21904 — High (CVSS 7.2): A directory traversal vulnerability exists in the CMA CLI setenv command of Garrett Metal Detectors’ iC Module CMA…
CVE-2021-21907 — Medium (CVSS 4.9): A directory traversal vulnerability exists in the CMA CLI getenv command functionality of Garrett Metal Detectors’ iC…

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →