Vulnerability Description
A vulnerability identified in the HX Agent driver file fekern.sys allowed a threat actor with local user access the ability to gain elevated system privileges. Utilization of a Bring Your Own Vulnerable Driver (BYOVD) was leveraged to gain access to the critical Windows process memory lsass.exe (Local Security Authority Subsystem Service). The fekern.sys is a driver file associated with the HX Agent (used in all existing HX Agent versions). The vulnerable driver installed in a product or a system running a fully functional HX Agent is, itself, not exploitable as the product’s tamper protection restricts the ability to communicate with the driver to only the Agent’s processes.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Trellix | Endpoint Security | >= 30.0.0, <= 34.0.0 |
Related Weaknesses (CWE)
References
- https://thrive.trellix.com/s/article/000015100Permissions Required
FAQ
What is CVE-2025-14963?
CVE-2025-14963 is a vulnerability with a CVSS score of 7.8 (HIGH). A vulnerability identified in the HX Agent driver file fekern.sys allowed a threat actor with local user access the ability to gain elevated system privileges. Utilization of a Bring Your Own Vulnerab...
How severe is CVE-2025-14963?
CVE-2025-14963 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-14963?
Check the references section above for vendor advisories and patch information. Affected products include: Trellix Endpoint Security.