CVE-2023-43892Public exploitNetwork attack vector

Unauthenticated command execution via WAN Hostname injection

Published Oct 2, 2023 · Updated Apr 4, 2025

OS command injection in Netis N3 Firmware 1.0.1.865 allows remote attackers to execute arbitrary commands through the WAN Hostname field. The WAN-settings handler fails to neutralize shell metacharacters in the supplied Hostname value before it reaches an OS command. No authentication or user interaction is required, and successful exploitation grants command execution on the router.

CVSS severity9.8
Critical
EPSS probability1.89%
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 Netis N3 Firmware 1.0.1.865 allows remote attackers to execute arbitrary commands through the WAN Hostname field. The WAN-settings handler fails to neutralize shell metacharacters in the supplied Hostname value before it reaches an OS command. No authentication or user interaction is required, and successful exploitation grants command execution on the router.

The record

CVE
CVE-2023-43892
Published
Oct 2, 2023
Updated
Apr 4, 2025
Vendor
Netis Systems Co., Ltd.
Product
N3 Firmware
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 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?

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

  1. Affected versionversion=1.0.1.865

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Netis Systems Co., Ltd. · N3 Firmwareversion=1.0.1.865

Published CVSS scores

9.8NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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