CVE-2026-6059

Adjacent-network script execution via undisclosed XSS mechanism

Published May 25, 2026 · Updated May 25, 2026

Cross-site scripting in NEC Platforms Aterm router firmware allows remote attackers to execute scripts in a management user's browser. NEC has not published the affected parameter, request handler, or escaping failure in the web management interface. Exploitation requires adjacent-LAN access and active interaction by a user who opens that interface; no data disclosure or service interruption is reported.

CVSS severity4.8
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in NEC Platforms Aterm router firmware allows remote attackers to execute scripts in a management user's browser. NEC has not published the affected parameter, request handler, or escaping failure in the web management interface. Exploitation requires adjacent-LAN access and active interaction by a user who opens that interface; no data disclosure or service interruption is reported.

The record

CVE
CVE-2026-6059
Published
May 25, 2026
Updated
May 25, 2026
Vendor
NEC Platforms, Ltd.
Product
Aterm WX7800T8
Classifications
CWE-79, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 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. 1.5.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

NEC Platforms, Ltd. · Aterm WX7800T8version=Before Ver. 1.5.1
NEC Platforms, Ltd. · Aterm Biz SH621A1version=Before Ver. 3.2.2
NEC Platforms, Ltd. · Aterm WX1800HPversion=Before Ver. 3.2.2
NEC Platforms, Ltd. · Aterm WX11000T12version=Before Ver. 1.4.0
NEC Platforms, Ltd. · Aterm 19000T12BEversion=Before Ver. 1.1.0
NEC Platforms, Ltd. · Aterm WX4200D5version=Before Ver. 1.3.5
NEC Platforms, Ltd. · Aterm WX3000HP2version=Before Ver. 1.3.2
NEC Platforms, Ltd. · Aterm GX621A1version=Before Ver. 3.2.2
NEC Platforms, Ltd. · Aterm WX5400HPversion=Before Ver. 2.1.0

Published CVSS scores

4.8NEC CorporationCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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