EfficientLab WorkExaminer Professional up to 4.0.0.52001 hard-coded credentials

Summaryinfo

A vulnerability, which was classified as critical, was found in EfficientLab WorkExaminer Professional up to 4.0.0.52001. This affects an unknown function. Executing a manipulation can lead to hard-coded credentials. This vulnerability appears as CVE-2025-10639. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in EfficientLab WorkExaminer Professional up to 4.0.0.52001. It has been declared as very critical. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The WorkExaminer Professional server installation comes with an FTP server that is used to receive the client logs on TCP port 12304. An attacker with network access to this port can use weak hardcoded credentials to login to the FTP server and modify or read data, log files and gain remote code execution as NT Authority\SYSTEM on the server by exchanging accessible service binaries in the WorkExaminer installation directory (e.g. "C:\Program File (x86)\Work Examiner Professional Server").

The weakness was presented by Tobias Niemann. The advisory is shared for download at r.sec-consult.com. This vulnerability was named CVE-2025-10639 since 09/17/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/21/2025). The MITRE ATT&CK project declares the attack technique as T1110.001.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• EfficientLab

Name

• WorkExaminer Professional

Version

• 4.0.0.52001

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