CVE-2023-43891Public exploitNetwork attack vector

Unauthenticated command execution via unvalidated credential fields

Published Oct 2, 2023 · Updated Sep 20, 2024

Command injection in Netis N3 Firmware 1.0.1.865 allows remote attackers to execute arbitrary commands via crafted credentials. The credential-change routine passes username and password values into RunSystemCmd-built chpasswd shell commands without validation. No authentication or user interaction is required, and injected commands run on the router with the routine's privileges.

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

Command injection in Netis N3 Firmware 1.0.1.865 allows remote attackers to execute arbitrary commands via crafted credentials. The credential-change routine passes username and password values into RunSystemCmd-built chpasswd shell commands without validation. No authentication or user interaction is required, and injected commands run on the router with the routine's privileges.

The record

CVE
CVE-2023-43891
Published
Oct 2, 2023
Updated
Sep 20, 2024
Vendor
Netis Systems Co., Ltd.
Product
N3 Firmware
Classifications
CWE-77, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 20, 2024Record 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

9.8NIST 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.

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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 exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

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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