CVE-2023-51099Public exploitNetwork attack vector

Unauthenticated command execution via cmdinput metacharacters

Published Dec 26, 2023 · Updated Aug 2, 2024

Command injection in Tenda W9 firmware 1.0.0.7(4456)_CN allows remote attackers to execute arbitrary OS commands via an HTTP request. The formexeCommand route handler inserts the cmdinput parameter into a shell command string without neutralizing shell metacharacters. No user interaction is required; successful exploitation starts a telnet shell in the published proof of concept.

CVSS severity9.8
Critical
EPSS probability1.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Command injection in Tenda W9 firmware 1.0.0.7(4456)_CN allows remote attackers to execute arbitrary OS commands via an HTTP request. The formexeCommand route handler inserts the cmdinput parameter into a shell command string without neutralizing shell metacharacters. No user interaction is required; successful exploitation starts a telnet shell in the published proof of concept.

The record

CVE
CVE-2023-51099
Published
Dec 26, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

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.

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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')
T1190Exploit Public-Facing Application

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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