Cyber Resilience

CVE-2022-40903

Medium

Published: 14 November 2022

Published
14 November 2022
Modified
30 April 2025
KEV Added
Patch
CVSS Score v3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0017 38.1th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-40903 is a medium-severity Improper Restriction of Excessive Authentication Attempts (CWE-307) vulnerability in Aiphone Gt-Dmb-N Firmware. Its CVSS base score is 6.5 (Medium).

Operationally, ranked at the 38.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Aiphone GT-DMB-N 3-in-1 Video Entrance Station with NFC Reader 1.0.3 does not mitigate against repeated failed access attempts, which allows an attacker to gain administrative privileges.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

aiphone
gt-dmb-n firmware
≤ 3.00
aiphone
gt-dmb firmware
≤ 3.00
aiphone
gt-dmb-lvn firmware
≤ 3.00
aiphone
gt-db-vn firmware
≤ 2.00

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-307

This control directly enforces limits on consecutive invalid logon attempts and automatic response (e.g., lockout) to prevent brute-force exploitation of authentication mechanisms.

addresses: CWE-307

Specific conditions can include excessive failed attempts, triggering stronger authentication that restricts brute-force exploitation.

References