CVE-2025-9415Public exploitNetwork attack vector

Authenticated dangerous file upload via fileconnect

Published Aug 25, 2025 · Updated Aug 25, 2025

Unrestricted file upload in GreenCMS 2.3.0603 and earlier allows remote authenticated users to write dangerous files through the media endpoint. The fileconnect action accepts upload[] content without restricting dangerous file types and stores attacker-controlled files beneath the web application. Low-privileged authenticated access is required, and exploitation writes attacker-controlled content to the server.

CVSS severity9.8
Critical
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in GreenCMS 2.3.0603 and earlier allows remote authenticated users to write dangerous files through the media endpoint. The fileconnect action accepts upload[] content without restricting dangerous file types and stores attacker-controlled files beneath the web application. Low-privileged authenticated access is required, and exploitation writes attacker-controlled content to the server.

The record

CVE
CVE-2025-9415
Published
Aug 25, 2025
Updated
Aug 25, 2025
Vendor
GreenCMS
Product
GreenCMS
Classifications
CWE-434, CWE-284, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2025Record 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=2.3.0603

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GreenCMS · GreenCMSversion=2.3.0603

Published CVSS scores

6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-284Improper Access Control
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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