---
id: CVE-2025-40807
title: >-
  A vulnerability has been identified in Gridscale X Prepay (All versions <
  V4.2.1)
summary: >-
  A vulnerability has been identified in Gridscale X Prepay (All versions <
  V4.2.1). The affected application is vulnerable to capture-replay of
  authentication tokens. This could allow an authenticated but already
  locked-out user to establ…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-294
vendor: siemens
product: gridscale_x_prepay
affected:
  - gridscale_x_prepay < 4.2.1
patched:
  - gridscale_x_prepay 4.2.1
published: '2025-12-09'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T20:10:01.970'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-40807'
references:
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-356310.html'
    label: productcert@siemens.com
tags:
  - nvd
epss: 0.00302
epssPercentile: 0.20924
ingestedAt: '2026-10-07T20:46:46.790Z'
---

## Overview

A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1). The affected application is vulnerable to capture-replay of authentication tokens. This could allow an authenticated but already locked-out user to establish still valid user sessions.

## Affected

- `gridscale_x_prepay < 4.2.1`

## Remediation

Upgrade past the affected range:

- `gridscale_x_prepay 4.2.1`