CVE-2026-4309

MEDIUMNVD 6.56.5—

6.5

Missing Authorization vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to get a specific device information and change the settings via network.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 12.5%
KEV: Not listed

Published

March 27, 2026

Last Modified

April 20, 2026

References (1)

psirt-info@cyberhttps://jpn.nec.com/security-info/secinfo/nv26-001_en.html

Data Freshness Timeline

(refreshed 12× in last 7d / 17× 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.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 20:05 UTCEG score recompute
2026-05-20 20:05 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-4309?

CVE-2026-4309 is a medium vulnerability published on March 27, 2026. Missing Authorization vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to get a specific device information and change the settings via network.

When was CVE-2026-4309 disclosed?

CVE-2026-4309 was first published in the National Vulnerability Database on March 27, 2026, with the most recent update on April 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-4309 actively exploited?

CVE-2026-4309 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-4309?

CVE-2026-4309 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2026-4309?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4309, 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-2026-4309

📅 Published

🔄 Last Modified

🔗 References (1)