CVE-2024-9916Public exploitNetwork attack vector

Unauthenticated command execution via prefix allowlist bypass

Published Oct 13, 2024 · Updated Oct 15, 2024

OS command injection in UsualTool UTCMS V9 allows remote attackers to execute arbitrary operating-system commands through parameter o. The unauthenticated cli.php endpoint accepts o by POST and passes values beginning with cd, php, nohup, or composer to command execution without neutralizing shell syntax. A network-reachable installation is enough; a nohup-prefixed payload bypasses the prefix filter and executes with the web-server process's privileges.

CVSS severity9.8
Critical
EPSS probability73.62%
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 UsualTool UTCMS V9 allows remote attackers to execute arbitrary operating-system commands through parameter o. The unauthenticated cli.php endpoint accepts o by POST and passes values beginning with cd, php, nohup, or composer to command execution without neutralizing shell syntax. A network-reachable installation is enough; a nohup-prefixed payload bypasses the prefix filter and executes with the web-server process's privileges.

The record

CVE
CVE-2024-9916
Published
Oct 13, 2024
Updated
Oct 15, 2024
Vendor
UsualTool
Product
UTCMS
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=v9
  2. Affected versionversion=V9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

UsualTool · UTCMSversion=v9; version=V9

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059Command and Scripting Interpreter

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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