---
id: CVE-2025-30047
title: Remote Code Execution via Java Deserialization in CGM CLININET
summary: >-
  CGM CLININET is vulnerable to Remote Code Execution caused by deserialization
  of untrusted data. The server exposes an HTTP-based API, used by the
  administrative module, that exchanges data using Java object serialization. An
  attacker wi…
severity: critical
cvss: 9.4
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cvssSource: cna
cwe:
  - CWE-502
vendor: CGM
product: CGM CLININET
affected:
  - clininet < 2026.MS3
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T08:22:55.856Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-30047'
references:
  - url: 'https://cert.pl/en/posts/2026/10/CVE-2025-30043/'
  - url: 'https://www.cgm.com/pol_pl/products/szpital/cgm-clininet.html'
tags:
  - cve.org
ingestedAt: '2026-10-23T09:20:44.063Z'
---

## Overview

CGM CLININET is vulnerable to Remote Code Execution caused by deserialization of untrusted data. The server exposes an HTTP-based API, used by the administrative module, that exchanges data using Java object serialization. An attacker within the same local network is able to send requests to this API and transmit a crafted serialized object. When it is deserialized, it allows arbitrary code execution with root privileges on the server. 


This issue was fixed in version 2026.MS3

## Affected

- `clininet < 2026.MS3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.