CVE-2023-47304

HIGHNVD 7.87.8—

7.8

An issue was discovered in Vonage Box Telephone Adapter VDV23 version VDV21-3.2.11-0.5.1, allows local attackers to bypass UART authentication controls and read/write arbitrary values to the memory of the device.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 5.2%
KEV: Not listed

Published

December 5, 2023

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://trojanhorsey.substack.com/p/cve-2023-47304-unsecured-uart-in
af854a3a-2127-422b-91ae-364da2661108https://trojanhorsey.substack.com/p/cve-2023-47304-unsecured-uart-in

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-287Improper Authentication

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2023-47304?

CVE-2023-47304 is a high vulnerability published on December 5, 2023. An issue was discovered in Vonage Box Telephone Adapter VDV23 version VDV21-3.2.11-0.5.1, allows local attackers to bypass UART authentication controls and read/write arbitrary values to the memory of the device.

When was CVE-2023-47304 disclosed?

CVE-2023-47304 was first published in the National Vulnerability Database on December 5, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-47304 actively exploited?

CVE-2023-47304 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-47304?

CVE-2023-47304 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2023-47304?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-47304, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2023-47304

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-47304?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)