CVE-2026-4620Network attack vector

LAN-side authenticated arbitrary command execution

Published Mar 27, 2026 · Updated Mar 27, 2026

OS command injection in NEC Platforms Aterm WX1500HP before 1.4.2 and WX3600HP before 1.5.3 allows remote authenticated users to execute commands. NEC has not disclosed the vulnerable request, parameter, or command-building operation that mishandles input. Access is limited to the LAN side and requires high privileges and user interaction; successful exploitation runs arbitrary OS commands on the router.

CVSS severity7.1
High
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in NEC Platforms Aterm WX1500HP before 1.4.2 and WX3600HP before 1.5.3 allows remote authenticated users to execute commands. NEC has not disclosed the vulnerable request, parameter, or command-building operation that mishandles input. Access is limited to the LAN side and requires high privileges and user interaction; successful exploitation runs arbitrary OS commands on the router.

The record

CVE
CVE-2026-4620
Published
Mar 27, 2026
Updated
Mar 27, 2026
Vendor
NEC Platforms, Ltd.
Product
Aterm WX1500HP
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Before Ver. 1.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NEC Platforms, Ltd. · Aterm WX1500HPversion=Before Ver. 1.4.2
NEC Platforms, Ltd. · Aterm WX3600HPversion=Before Ver. 1.4.2

Published CVSS scores

7.1NEC CorporationCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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