CVE-2024-40551Network attack vector

Authenticated code execution via crafted template upload

Published Jul 12, 2024 · Updated Aug 2, 2024

Arbitrary file upload in PublicCMS 4.0.202302.e allows remote authenticated users to execute code through the template upload endpoint. The doUpload action in CmsTemplateAdminController accepts a crafted file, but the public report does not disclose which validation or storage control fails. Administrative access to the network-reachable backend is required, and successful exploitation runs attacker-supplied code on the server.

CVSS severity8.8
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in PublicCMS 4.0.202302.e allows remote authenticated users to execute code through the template upload endpoint. The doUpload action in CmsTemplateAdminController accepts a crafted file, but the public report does not disclose which validation or storage control fails. Administrative access to the network-reachable backend is required, and successful exploitation runs attacker-supplied code on the server.

The record

CVE
CVE-2024-40551
Published
Jul 12, 2024
Updated
Aug 2, 2024
Vendor
Tianjin Black Core Technology Co., LTD.
Product
PublicCMS
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 2024CVE 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.202302.e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Tianjin Black Core Technology Co., LTD. · PublicCMSversion=4.0.202302.e

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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