CVE-2023-39808

9.8 criticalEPSS 0.6%

Critical (9.8) in nvki intelligent broadband subscriber gateway. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-798
Published: 2023-08-21
Modified: 2026-07-09
Record from: the NVD, synced 2026-10-19

Affected

nvki:intelligent_broadband_subscriber_gateway

References

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

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