CVE-2026-120239Public exploitNetwork attack vector

Root command execution via unsanitized file_id

Published Nov 1, 2026 · Updated Nov 1, 2026

Command injection in WN553X1-B 260403_2.0.0 allows remote authenticated users to execute root commands via WireGuard requests. In /bin/ioos, sub_419DA8 interpolates file_id into a shell command without sanitization during action=close and executes it through popen. A valid management session is required; injected commands run with the backend's root privileges.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in WN553X1-B 260403_2.0.0 allows remote authenticated users to execute root commands via WireGuard requests. In /bin/ioos, sub_419DA8 interpolates file_id into a shell command without sanitization during action=close and executes it through popen. A valid management session is required; injected commands run with the backend's root privileges.

The record

CVE
CVE-2026-120239
Published
Nov 1, 2026
Updated
Nov 1, 2026
Vendor
Wavlink Technology Ltd.
Product
WN553X1-B
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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?

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  1. Affected versionversion=V260403_2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wavlink Technology Ltd. · WN553X1-Bversion=V260403_2.0.0

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command
T1059.004Unix Shell

Public exploit references

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

Technologies

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