CVE-2025-10640 Missing Server-Side Authentication Checks in EfficientLab WorkExaminer Professional
Unauthenticated attackers can bypass login checks to gain administrative access and view sensitive user monitoring data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-10640?
CVE-2025-10640 is a critical authentication bypass vulnerability in EfficientLab WorkExaminer Professional, published on 21 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-602
Which versions are affected by CVE-2025-10640?
How do I fix CVE-2025-10640?
No fix has been published for CVE-2025-10640 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-10640 being exploited?
There is no known exploitation of CVE-2025-10640 in the wild and no public exploit code.
Sources
Also known as GHSA-8xf9-xq28-hpj9.