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CVE-2025-10640
Missing Server-Side Authentication Checks in EfficientLab WorkExaminer Professional
Description

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.

INFO

Published Date :

Oct. 21, 2025, 12:15 p.m.

Last Modified :

Oct. 21, 2025, 7:31 p.m.

Remotely Exploit :

No

Source :

551230f0-3615-47bd-b7cc-93e92e730bbf
Affected Products

The following products are affected by CVE-2025-10640 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

: Total Affected Vendor : 0 | Products : 0
Solution
Implement server-side validation for authentication responses to prevent unauthorized administrative access.
  • Enforce server-side validation of authentication results.
  • Disable client-side only authentication checks.
  • Apply vendor patches or updates for WorkExaminer.
  • Restrict access to TCP port 12306.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-10640.

URL Resource
https://r.sec-consult.com/workexaminer
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-10640 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-10640 weaknesses.

CAPEC-21: Exploitation of Trusted Identifiers Exploitation of Trusted Identifiers CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies Accessing/Intercepting/Modifying HTTP Cookies CAPEC-162: Manipulating Hidden Fields Manipulating Hidden Fields CAPEC-202: Create Malicious Client Create Malicious Client CAPEC-207: Removing Important Client Functionality Removing Important Client Functionality CAPEC-208: Removing/short-circuiting 'Purse' logic: removing/mutating 'cash' decrements Removing/short-circuiting 'Purse' logic: removing/mutating 'cash' decrements CAPEC-383: Harvesting Information via API Event Monitoring Harvesting Information via API Event Monitoring CAPEC-384: Application API Message Manipulation via Man-in-the-Middle Application API Message Manipulation via Man-in-the-Middle CAPEC-385: Transaction or Event Tampering via Application API Manipulation Transaction or Event Tampering via Application API Manipulation CAPEC-386: Application API Navigation Remapping Application API Navigation Remapping CAPEC-387: Navigation Remapping To Propagate Malicious Content Navigation Remapping To Propagate Malicious Content CAPEC-388: Application API Button Hijacking Application API Button Hijacking

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-10640 vulnerability anywhere in the article.

  • seclists.org
SEC Consult SA-20251021-0 :: Multiple Vulnerabilities in EfficientLab WorkExaminer Professional (CVE-2025-10639, CVE-2025-10640, CVE-2025-10641)

Full Disclosure mailing list archives From: SEC Consult Vulnerability Lab via Fulldisclosure <fulldisclosure () seclists org> Date: Tue, 21 Oct 2025 11:40:34 +0000 SEC Consult Vulnerability Lab Securi ... Read more

Published Date: Oct 21, 2025 (1 hour, 39 minutes ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-10640 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 551230f0-3615-47bd-b7cc-93e92e730bbf

    Oct. 21, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added CWE CWE-602
    Added Reference https://r.sec-consult.com/workexaminer
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.