CVE-2023-39454

CRITICALNVD 9.89.8—

9.8

Buffer overflow vulnerability exists in ELECOM wireless LAN routers, which may allow an unauthenticated attacker to execute arbitrary code.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 73.2%
KEV: Not listed

Published

August 18, 2023

Last Modified

February 17, 2025

References (4)

vultures@jpcerthttps://jvn.jp/en/vu/JVNVU91630351/
vultures@jpcerthttps://www.elecom.co.jp/news/security/20230711-01/
af854a3a-2127-422b-91ae-364da2661108https://jvn.jp/en/vu/JVNVU91630351/
af854a3a-2127-422b-91ae-364da2661108https://www.elecom.co.jp/news/security/20230711-01/

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 17× 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-2023-39454?

CVE-2023-39454 is a critical vulnerability published on August 18, 2023. Buffer overflow vulnerability exists in ELECOM wireless LAN routers, which may allow an unauthenticated attacker to execute arbitrary code.

When was CVE-2023-39454 disclosed?

CVE-2023-39454 was first published in the National Vulnerability Database on August 18, 2023, with the most recent update on February 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-39454 actively exploited?

CVE-2023-39454 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-39454?

CVE-2023-39454 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-39454?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-39454, 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.

Dependency Blast Radius

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CVE-2023-39454

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-39454?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)