CVE-2023-26866Network attack vector

Root command execution via pre-login engineering tool

Published Apr 4, 2023 · Updated Feb 13, 2025

Command injection in GreenPacket WR-1200 and OT-235 firmware allows remote attackers to execute root commands through a pre-login web utility. The engineering command tool in the router web utility accepts attacker-supplied commands before authentication and passes them to root-level execution. The affected M-IDU-1.6.0.3_V1.1 and MH-46360-2.0.3-R5-GP builds require no account or user interaction, allowing complete device takeover.

CVSS severity9.8
Critical
EPSS probability2.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in GreenPacket WR-1200 and OT-235 firmware allows remote attackers to execute root commands through a pre-login web utility. The engineering command tool in the router web utility accepts attacker-supplied commands before authentication and passes them to root-level execution. The affected M-IDU-1.6.0.3_V1.1 and MH-46360-2.0.3-R5-GP builds require no account or user interaction, allowing complete device takeover.

The record

CVE
CVE-2023-26866
Published
Apr 4, 2023
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1190Exploit Public-Facing Application

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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