CVE-2023-38318Network attack vector

Arbitrary command execution via unsanitized gateway FQDN

Published Jan 26, 2024 · Updated Jun 20, 2025

OS command injection in OpenNDS before 10.1.3 allows attackers with configuration-file access to execute arbitrary commands. The gateway FQDN value is interpolated into helper-script command strings that _execute_ret() passes to popen() without neutralizing shell metacharacters. Direct or indirect write access to the configuration file is required, and exploitation executes commands on the captive-portal host.

CVSS severity9.8
Critical
EPSS probability1.10%
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 OpenNDS before 10.1.3 allows attackers with configuration-file access to execute arbitrary commands. The gateway FQDN value is interpolated into helper-script command strings that _execute_ret() passes to popen() without neutralizing shell metacharacters. Direct or indirect write access to the configuration file is required, and exploitation executes commands on the captive-portal host.

The record

CVE
CVE-2023-38318
Published
Jan 26, 2024
Updated
Jun 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
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.

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Technologies

Your stack

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Your stack

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