How severe is CVE-2023-47674?

CVE-2023-47674 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-47674 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-47674?

CVE-2023-47674 primarily affects C-first Cfr-1004ea Firmware. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-47674?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-47674 published?

CVE-2023-47674 was published on 2023-11-16 and last updated on 2026-06-17.

CVE-2023-47674

CVE-2023-47674 is a critical-severity vulnerability in C-first Cfr-1004ea Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: C-first Cfr-1004ea Firmware
Published: 2023-11-16
Last modified: 2026-06-17

Description

Missing authentication for critical function vulnerability in First Corporation's DVRs allows a remote unauthenticated attacker to rewrite or obtain the configuration information of the affected device. Note that updates are provided only for Late model of CFR-4EABC, CFR-4EAB, CFR-8EAB, CFR-16EAB, MD-404AB, and MD-808AB. As for the other products, apply the workaround.

Frequently asked questions

What is CVE-2023-47674?: Missing authentication for critical function vulnerability in First Corporation's DVRs allows a remote unauthenticated attacker to rewrite or obtain the configuration information of the affected device. Note that updates are provided only for Late model of CFR-4EABC, CFR-4EAB, CFR-8EAB, CFR-16EAB, MD-404AB, and MD-808AB. As for the other products, apply the workaround.
How severe is CVE-2023-47674?: CVE-2023-47674 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-47674 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-47674?: CVE-2023-47674 primarily affects C-first Cfr-1004ea Firmware. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-47674?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-47674 published?: CVE-2023-47674 was published on 2023-11-16 and last updated on 2026-06-17.

References

Affected products (28)

cpe:2.3:o:c-first:cfr-1004ea_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-1008ea_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-1016ea_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-16eaa_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-16eab_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-16eha_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-16ehd_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-4eaa_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-4eaam_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-4eab_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-4eabc_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-4eha_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-4ehd_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-8eaa_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-8eab_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-8eha_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-8ehd_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-904e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-908e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:cfr-916e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-404aa_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-404ab_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-404ha_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-404hd_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-808aa_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-808ab_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-808ha_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:c-first:md-808hd_firmware:-:*:*:*:*:*:*:*

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