CVE-2019-20031

CRITICAL

NEC UM8000 and UM4730 - Unauthenticated Brute Force via Telephone User Interface

Title source: llm

Description

NEC UM8000, UM4730 and prior non-InMail voicemail systems with all known software versions may permit an infinite number of login attempts in the telephone user interface (TUI), effectively allowing brute force attacks.

References (1)

Core 1

Core References

Third Party Advisory x_refsource_misc

https://shadytel.su/files/nec_cve.txt

Scores

CVSS v3 9.1

EPSS 0.0100

EPSS Percentile 58.1%

Attack Vector NETWORK

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

Details

CWE

CWE-307

Status published

Products (2)

nec/um4730_firmware

nec/um8000_firmware

Published Jul 29, 2020

Tracked Since Feb 18, 2026