---
id: CVE-2025-10640
title: >-
  An unauthenticated attacker with access to TCP port 12306 of the WorkExaminer
  server can exploit missing server-side authentication checks to bypass the
  login prompt in the WorkExaminer Professional console to gain administrative
  access …
summary: >-
  An unauthenticated attacker with access to TCP port 12306 of the WorkExaminer
  server can exploit missing server-side authentication checks to bypass the
  login prompt in the WorkExaminer Professional console to gain administrative
  access …
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-602
published: '2025-10-21'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-10640'
references:
  - url: 'https://r.sec-consult.com/workexaminer'
    label: 551230f0-3615-47bd-b7cc-93e92e730bbf
  - url: 'http://seclists.org/fulldisclosure/2025/Oct/19'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00901
epssPercentile: 0.58441
ingestedAt: '2026-10-08T11:31:27.453Z'
---

## Overview

An unauthenticated attacker with access to TCP port 12306 of the WorkExaminer server can exploit missing server-side authentication checks to bypass the login prompt in the WorkExaminer Professional console to gain administrative access to the WorkExaminer server and therefore all sensitive monitoring data. This includes monitored screenshots and keystrokes of all users.

The WorkExaminer Professional console is used for administrative access to the server. Before access to the console is granted administrators must login. Internally, a custom protocol is used to call a respective stored procedure on the MSSQL database. The return value of the call is not validated on the server-side. Instead it is only validated client-side which allows to bypass authentication.

## Remediation

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