CVE-2023-33235Network attack vector

Authenticated code execution via SSH CLI system call

Published May 22, 2023 · Updated Jan 21, 2025

Command injection in Moxa MXsecurity Series 1.0 allows remote authenticated users to execute arbitrary code through the SSH CLI. The SSH CLI passes a user-supplied string to a system call without proper validation, allowing escape from its restricted shell. Valid authorization privileges are required, and successful exploitation runs code in the administrative user's context.

CVSS severity8.8
High
EPSS probability1.46%
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 Moxa MXsecurity Series 1.0 allows remote authenticated users to execute arbitrary code through the SSH CLI. The SSH CLI passes a user-supplied string to a system call without proper validation, allowing escape from its restricted shell. Valid authorization privileges are required, and successful exploitation runs code in the administrative user's context.

The record

CVE
CVE-2023-33235
Published
May 22, 2023
Updated
Jan 21, 2025
Vendor
Moxa
Product
MXsecurity Series
Classifications
CWE-77, CAPEC-248, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 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

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Moxa · MXsecurity Seriesversion=1.0

Published CVSS scores

7.2MoxaCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/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-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC-248Command Injection
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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