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CVE-2026-4620

Nec Aterm Wx1500hp Firmware command injection

9.8 CRITICALEPSS 1.22%
  1. Published27 Mar 2026

Description

OS Command Injection vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to execute arbitrary OS commands via network.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Nec Aterm Wx1500hp Firmware< 1.4.2
Nec Aterm Wx3600hp Firmware< 1.5.3

Remediation

Fixed in
Nec Aterm Wx1500hp Firmware≥ 1.4.2
Nec Aterm Wx3600hp Firmware≥ 1.5.3

References

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Frequently asked

Is CVE-2026-4620 being actively exploited?

CVE-2026-4620 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.22%.

How severe is CVE-2026-4620?

CVE-2026-4620 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.22% probability of exploitation.

Which products are affected by CVE-2026-4620?

Affected products include Nec Aterm Wx1500hp Firmware, Nec Aterm Wx3600hp Firmware.

How do I fix CVE-2026-4620?

Upgrade affected software to a fixed version, for example Nec Aterm Wx1500hp Firmware 1.4.2, Nec Aterm Wx3600hp Firmware 1.5.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-4620 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.