CVE-2023-39808

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-21 · updated 2026-07-09
Weakness: CWE-798

Description

N.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain a hardcoded root password that allows attackers to login with root privileges via the SSH service. The cleartext password corresponding to the $1$4Tmm01jl$7HRvcW.bz7uGmX9hiQWvR hash was not determined by the vulnerability discoverer.

Affected products

Nvki Intelligent Broadband Subscriber Gateway: 3.5

References

https://github.com/maride
https://sec.maride.cc/posts/ibsg/

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