---
title: "CVE-2025-29287: MCMS allows arbitrary file uploads in the ueditor component"
url: https://erroneo.us/security/cve/CVE-2025-29287/
description: "CVE-2025-29287 (net.mingsoft:ms-mcms (Maven)): An arbitrary file upload vulnerability in the ueditor component of MCMS v5.4.3 allows attackers to execute…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-04-21
date_modified: 2026-07-05
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-29287"
kev: false
cvss: 9.8
epss: 0.00778
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-29287: MCMS allows arbitrary file uploads in the ueditor component

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.8% , percentile 55: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 55% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes net.mingsoft:ms-mcms (Maven) < 5.4.4, fixed in 5.4.4 . Check your lockfile, including transitive dependencies.

## What it is

An arbitrary file upload vulnerability in the ueditor component of MCMS v5.4.3 allows attackers to execute arbitrary code via uploading a crafted file.

## Affected packages

- Maven `net.mingsoft:ms-mcms` < 5.4.4 → fixed: 5.4.4

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.78% probability of exploitation activity in the next 30 days; percentile 55.

## Sources

- [GitHub Advisory GHSA-3922-2r6r-r4fv](https://github.com/advisories/GHSA-3922-2r6r-r4fv)
- [CVE.org record CVE-2025-29287](https://www.cve.org/CVERecord?id=CVE-2025-29287)
- [NVD entry CVE-2025-29287](https://nvd.nist.gov/vuln/detail/CVE-2025-29287)
- [gitee.com](https://gitee.com/mingSoft/MCMS/issues/IBOOTX)
- [gist.github.com](https://gist.github.com/erdan111/38dcb5150b523436fe01249b2542f02f#file-cve-2025-29287)
- [gitee.com](https://gitee.com/mingSoft/MCMS/commit/17679d8fae3df2b433478829b01ab05a56ffdbc8)

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Source page: https://erroneo.us/security/cve/CVE-2025-29287/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt