CVE-2018-18473

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-03-21 · updated 2026-06-17
Weakness: CWE-798

Description

A hidden backdoor on PATLITE NH-FB Series devices with firmware version 1.45 or earlier, NH-FV Series devices with firmware version 1.10 or earlier, and NBM Series devices with firmware version 1.09 or earlier allow attackers to enable an SSH daemon via the "kankichi" or "kamiyo4" password to the _secret1.htm URI. Subsequently, the default password of root for the root account allows an attacker to conduct remote code execution and as a result take over the system.

Affected products

Patlite Nbm-D88N Firmware: all versions
Patlite Nhl-3Fb1 Firmware: all versions
Patlite Nhl-3Fv1N Firmware: all versions

References

https://herolab.usd.de/wp-content/uploads/sites/4/usd20180020.txt
https://www.patlite.com/support/Security_Informationtest.html
https://herolab.usd.de/wp-content/uploads/sites/4/usd20180020.txt
https://www.patlite.com/support/Security_Informationtest.html

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