CVE-2025-29287Public exploitNetwork attack vector

Remote code execution via unrestricted UEditor upload

Published Apr 21, 2025 · Updated Jul 5, 2026

Arbitrary file upload in MingSoft MCMS 5.4.3 allows remote attackers to execute code through the UEditor component. The UEditor upload handler accepts a crafted file without restricting dangerous executable types and stores it where server-side execution is possible. No authentication or user interaction is required, and successful exploitation grants code execution in the MCMS server process.

CVSS severity9.8
Critical
EPSS probability0.73%
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 MingSoft MCMS 5.4.3 allows remote attackers to execute code through the UEditor component. The UEditor upload handler accepts a crafted file without restricting dangerous executable types and stores it where server-side execution is possible. No authentication or user interaction is required, and successful exploitation grants code execution in the MCMS server process.

The record

CVE
CVE-2025-29287
Published
Apr 21, 2025
Updated
Jul 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record 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

9.8CISA CoordinatorCVSS: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-434Unrestricted Upload of File with Dangerous Type
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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