CVE-2023-47674Network attack vector

Unauthenticated configuration disclosure and modification

Published Nov 16, 2023 · Updated Jun 11, 2025

Authentication bypass in all versions of First Corporation DVR firmware allows remote attackers to read or rewrite device configuration. First Corporation and JPCERT/CC have not published the affected endpoint or the authentication check omitted during configuration access. Network access to the DVR is sufficient, requires no account or user interaction, and exposes configuration confidentiality and integrity.

CVSS severity9.8

Critical

EPSS probability1.26%

Next 30 days · Sep 16, 2026

Known exploitationUnconfirmed

Based on sourced intelligence

Hinoki checkNot available

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Summary

What happened

The record

CVE: CVE-2023-47674
Published: Nov 16, 2023
Updated: Jun 11, 2025

Vendor: First Corporation
Product: CFR-4EAA/8EAA/16EAA DVR
Classifications: CWE-306, T1190

Attack vector: network
Privileges: unauthenticated

Timeline

How it unfolded

Nov 16, 2023CVE publishedPublication date reported by the CVE source.
Jun 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

Affected versionversion=firmware all versions

What conditions does exploitation require?

Attack vectornetwork

Required privilegesunauthenticated

What is affected?

First Corporation · CFR-4EAA/8EAA/16EAA DVRversion=firmware all versions

First Corporation · CFR-4EAAM/4EABC DVRversion=firmware all versions

First Corporation · CFR-904E/908E/916E DVRversion=firmware all versions

First Corporation · CFR-1004EA/1008EA/1016EA DVRversion=firmware all versions

First Corporation · CFR-4EHD/8EHD/16EHD DVRversion=firmware all versions

First Corporation · MD-404AA/808AA DVRversion=firmware all versions

First Corporation · CFR-4EAB/8EAB/16EAB DVRversion=firmware all versions

First Corporation · MD-404HA/808HA DVRversion=firmware all versions

First Corporation · MD-404AB/808AB DVRversion=firmware all versions

First Corporation · MD-404HD/808HD DVRversion=firmware all versions

First Corporation · CFR-4EHA/8EHA/16EHA DVRversion=firmware all versions

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026

Latest reporting daySep 16, 2026

Latest daily unique IPsUnavailable

Prior 30-day averageUnavailable

SourceShadowserver honeypots (KEV)

Vectornetwork

Privilegesunauthenticated

Known exploitationUnconfirmed

Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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