CVE-2023-51100Public exploitNetwork attack vector

Authenticated command execution via diagnostic parameter injection

Published Dec 26, 2023 · Updated Aug 2, 2024

OS command injection in Tenda W9 firmware 1.0.0.7(4456)_CN allows remote authenticated users to execute arbitrary commands. The formGetDiagnoseInfo handler inserts the cmdinput HTTP parameter into a shell command without neutralizing shell metacharacters. The published request requires an administrator session cookie and uses injected backticks to start telnetd bound to /bin/sh.

CVSS severity9.8
Critical
EPSS probability1.84%
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 Tenda W9 firmware 1.0.0.7(4456)_CN allows remote authenticated users to execute arbitrary commands. The formGetDiagnoseInfo handler inserts the cmdinput HTTP parameter into a shell command without neutralizing shell metacharacters. The published request requires an administrator session cookie and uses injected backticks to start telnetd bound to /bin/sh.

The record

CVE
CVE-2023-51100
Published
Dec 26, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

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.

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
Privilegesadmin
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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