Vulnerability in Efficientlab Workexaminer Professional
CVE-2025-10640
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Efficientlab Workexaminer Professional — versions <= 4.0.0.52001
Weakness classification (CWE)
References
- 551230f0-3615-47bd-b7cc-93e92e730bbf (third-party-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-10640?
- CVE-2025-10640 is a critical-severity vulnerability in Efficientlab Workexaminer Professional, classified under CWE-602. CVSS score: 9.8/10. Published 2025-10-21.
- How severe is CVE-2025-10640?
- Critical severity. CVSS v3 base score is 9.8 out of 10.