Threat database

CVE-2026-107171 is a medium severity vulnerability in Trellix Agent version 5.8.4 involving the use of a hard-coded cryptographic key in the mfecryptc.dll component. This flaw allows regular users to decrypt the database, potentially exposing sensitive information. The vulnerability has a CVSS 4.0 base score of 6.9, indicating a moderate impact with local attack vector and low privileges required. There is no indication of active exploitation in the wild or available patches at this time.

An attacker with access to an HX 10.0.0  and previous versions, may send specially-crafted data to the HX console. The malicious detection would then trigger decompression of a large file that consumes an excessive amount of system resources thus causing a Denial of Service.

A Code Injection vulnerability existed in Trellix Network Security CM and NX. A locally authenticated admin user can execute arbitrary code using the web interface and Alert artifact details.

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.

A locally authenticated, privileged user can craft a malicious OpenSSL configuration file, potentially leading the agent to load an arbitrary local library. This may impair endpoint defenses and allow the attacker to achieve code execution with SYSTEM-level privileges.

A stored cross-site scripting vulnerability in ENS HX 10.0.4 allows a malicious user to inject arbitrary HTML into the ENS HX Malware Scan Name field, resulting in the exposure of sensitive data.

A path or symbolic link manipulation vulnerability in SIR 1.0.3 and prior versions allows an authenticated non-admin local user to overwrite system files with SIR backup files, which can potentially cause a system crash. This was achieved by adding a malicious entry to the registry under the Trellix SIR registry folder or via policy or with a junction symbolic link to files that the user would not normally have permission to acces