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High

Hardcoded FTP Credentials in WorkExaminer Professional Server

IdentifiersCVE-2025-10639CWE-798· Use of Hard-coded Credentials

CVE-2025-10639 affects WorkExaminer Professional Server. The server installation includes an FTP service listening on TCP port 12304 that is used to receive client logs. According to the provided content, this FTP service is accessible with weak hardcoded credentials. An attacker with network access to the exposed FTP port can authenticate to the service, read and modify stored data and log files, and leverage write access to replace accessible service binaries within the WorkExaminer installation directory, such as files under "C:\Program File (x86)\Work Examiner Professional Server". By exchanging those binaries, the attacker can achieve remote code execution in the context of NT AUTHORITY\SYSTEM on the server.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can lead to unauthorized access to sensitive monitoring data and log files, tampering with collected records, and full compromise of the WorkExaminer Professional Server host. Because the attacker can replace service binaries and obtain code execution as NT AUTHORITY\SYSTEM, the impact includes complete administrative control of the server, persistence through trojanized service executables, potential disabling or manipulation of monitoring functions, and possible follow-on lateral movement from the compromised system.

Mitigation

If you can’t patch tonight, do this now.

Restrict network access to TCP port 12304 to only trusted client systems using host-based or network firewalls. If feasible, disable the FTP service entirely until a fix is applied. Monitor for FTP logins to the service, unexpected reads or writes in the WorkExaminer installation directory, and changes to service executables. Implement application allowlisting or file integrity monitoring for binaries under the WorkExaminer server path. Segment the server from untrusted networks and limit outbound and lateral connectivity from the host to reduce post-compromise impact.

Remediation

Patch, then assume compromise.

Upgrade to a vendor-fixed version if one is available. Remove or change the hardcoded/weak FTP credentials, and disable the bundled FTP service if it is not strictly required. Review and harden file-system permissions on the WorkExaminer installation directory so that the FTP service account cannot modify service binaries or other executable files. Replace the FTP-based log ingestion mechanism with a more secure authenticated transport where possible. After remediation, rotate any credentials that may have been exposed, verify the integrity of binaries in the WorkExaminer installation path, and investigate for signs of unauthorized file access or binary replacement.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

ACTIVITY FEED

Recent activity

5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

5 SOURCESView more in app
What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures1

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity4

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2025-10639
NVD
nvd.nist.gov/vuln/detail/CVE-2025-10639
MITRE CWE · CWE-798
Use of Hard-coded Credentials
seclists.org
seclists.org/fulldisclosure/2025/Oct/19
r.sec-consult.com
r.sec-consult.com/workexaminer