Vulnerability · CVE-2025-10639
The WorkExaminer Professional server installation comes with an FTP server that is used to receive the client logs on TCP port 12304.
Published Oct 21, 2025 · catalog updated Nov 3, 2025 · EfficientLab WorkExaminer Professional
Last checked Oct 26, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-10639. EPSS is 0.93%. Act only if a listed version of EfficientLab WorkExaminer Professional is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-10641 · High
- CVE-2025-10640 · Critical
- Severity
- High8.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.93%
- Remediation
- Vendor / distro source
- Affected products
- vendor EfficientLab WorkExaminer Professional ≤ 4.0.0.52001
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").
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor EfficientLab WorkExaminer Professional ≤ 4.0.0.52001≤ 4.0.0.52001
How to fix CVE-2025-10639
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in ≤ 4.0.0.52001
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-10639. EPSS is 0.93%. Act only if a listed version of EfficientLab WorkExaminer Professional is installed.
Which versions are affected?
Compare what you have installed with EfficientLab WorkExaminer Professional ≤ 4.0.0.52001 ≤ 4.0.0.52001. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.93%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 21, 2025 · EUVD
Detected
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 WorkExa
Nov 3, 2025 · EUVD
Updated
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 WorkExa
Sources
- CVE.orgVulnerability recordCVE-2025-10639
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-10639
30-day exploitation probability 0.93%
first.org - EUVDVulnerability recordEUVD-2025-35161
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
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 26, 2026
- CVE.orgOct 25, 2026
- EUVDOct 25, 2026