CVE-2025-14963: Input Validation
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-14963?
CVE-2025-14963 has a critical severity rating due to the potential for elevated system privileges exploitation.
How do I fix CVE-2025-14963?
To fix CVE-2025-14963, update the Trellix HX Agent to the latest version provided by Trellix.
Who is affected by CVE-2025-14963?
CVE-2025-14963 affects users of the Trellix HX Agent software.
What kind of access is required to exploit CVE-2025-14963?
Exploitation of CVE-2025-14963 requires local user access to the affected system.
What could an attacker achieve by exploiting CVE-2025-14963?
An attacker could gain elevated system privileges and access critical Windows process memory through CVE-2025-14963.