CVE-2023-34213Network attack vector

Authenticated code execution via key-generation command injection

Published Aug 17, 2023 · Updated Oct 28, 2024

OS command injection in the key-generation function in Moxa TN-5900 Series firmware 3.3 and earlier allows remote authenticated users to execute code. The function insufficiently validates crafted web-service input before it reaches an operating-system command execution path. A low-privileged account is required; successful exploitation runs arbitrary commands on the router.

CVSS severity8.8
High
EPSS probability0.76%
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 the key-generation function in Moxa TN-5900 Series firmware 3.3 and earlier allows remote authenticated users to execute code. The function insufficiently validates crafted web-service input before it reaches an operating-system command execution path. A low-privileged account is required; successful exploitation runs arbitrary commands on the router.

The record

CVE
CVE-2023-34213
Published
Aug 17, 2023
Updated
Oct 28, 2024
Vendor
Moxa
Product
TN-5900 Series
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 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 <=3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Moxa · TN-5900 Seriesversion=1.0 <=3.3

Published CVSS scores

8.8Moxa Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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