Is CVE-2023-39808 actively exploited?

No active exploitation of CVE-2023-39808 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-39808 be exploited remotely?

Yes. CVE-2023-39808 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-39808?

CVE-2023-39808 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-39808

CWE-798Published: August 21, 2023· Updated: Jul 9, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Risk Analysis

NVK iBSG v3.5 contains a hardcoded root password that enables unauthorized SSH access with full privileges. This critical vulnerability allows for complete system compromise and requires immediate attention.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Change the default root password immediately and update the firmware to a version that removes hardcoded credentials.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-39808 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.