---
id: CVE-2025-15228
title: >-
  BPMFlowWebkit developed by WELLTEND TECHNOLOGY has a Arbitrary File Upload
  vulnerability, allowing unauthenticated remote attackers to upload and execute
  web shell backdoors, thereby enabling arbitrary code execution on the server.
summary: >-
  BPMFlowWebkit developed by WELLTEND TECHNOLOGY has a Arbitrary File Upload
  vulnerability, allowing unauthenticated remote attackers to upload and execute
  web shell backdoors, thereby enabling arbitrary code execution on the server.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
vendor: welltend
product: bpmflowwebkit
affected:
  - bpmflowwebkit < 5.0.5
patched:
  - bpmflowwebkit 5.0.5
published: '2025-12-29'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T19:10:00.210'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-15228'
references:
  - url: 'https://www.twcert.org.tw/en/cp-139-10605-426b6-2.html'
    label: twcert@cert.org.tw
  - url: 'https://www.twcert.org.tw/tw/cp-132-10604-c65aa-1.html'
    label: twcert@cert.org.tw
tags:
  - nvd
epss: 0.00591
epssPercentile: 0.46402
ingestedAt: '2026-10-05T19:30:59.949Z'
---

## Overview

BPMFlowWebkit developed by WELLTEND TECHNOLOGY has a Arbitrary File Upload vulnerability, allowing unauthenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

## Affected

- `bpmflowwebkit < 5.0.5`

## Remediation

Upgrade past the affected range:

- `bpmflowwebkit 5.0.5`