CVE-2024-8234Public exploitNetwork attack vector

Unauthenticated system-file access via command concatenation

Published Aug 30, 2024 · Updated Aug 30, 2024

OS command injection in Zyxel NWA1100-N firmware 1.00(AACE.1)C0 allows remote attackers to read system files over HTTP. The formSysCmd, formUpgradeCert, and formDelcert handlers concatenate sysCmd, upname, or certs input into commands passed to system(). No authentication or user interaction is required; successful requests execute device-shell commands and can expose files served by the web interface.

CVSS severity9.8
Critical
EPSS probability4.39%
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 Zyxel NWA1100-N firmware 1.00(AACE.1)C0 allows remote attackers to read system files over HTTP. The formSysCmd, formUpgradeCert, and formDelcert handlers concatenate sysCmd, upname, or certs input into commands passed to system(). No authentication or user interaction is required; successful requests execute device-shell commands and can expose files served by the web interface.

The record

CVE
CVE-2024-8234
Published
Aug 30, 2024
Updated
Aug 30, 2024
Vendor
Zyxel Networks
Product
NWA1100-N
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 30, 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=1.00(AACE.1)C0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zyxel Networks · NWA1100-Nversion=1.00(AACE.1)C0

Published CVSS scores

7.5Zyxel CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix 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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