CVE-2025-14963

highEPSS 0.001 · 1 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.11% (1st) EPSS

CVSS 7.8 · high

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-18

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

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.2–7.8

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v4.06.2mediumCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:Psecondary · ENISA EU

v4.06.2mediumCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · trellixpsirt@trellix.com

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20US

affected products (6)

Products and version ranges known to be affected.

Trellix Endpoint Security HX Agent <35.31.44all versionscert_bundDE
Trellix Endpoint Security≤ HX Agent <35.31.44cert_bundDE
Trellix Endpoint HX Agent (xAgent)≤ 36.30.0-17, 35.31.0-37, 34.x, 33.x and 30.xenisa_euvdEU
trellix endpoint security30.0.0 → 34.0.0nvdUScpe:2.3:a:trellix:endpoint_security:*:*:*:*:*:*:*:*
trellix endpoint security= 35.31.0-37nvdUScpe:2.3:a:trellix:endpoint_security:*:*:*:*:*:*:*:*
trellix endpoint security= 36.30.0-17nvdUScpe:2.3:a:trellix:endpoint_security:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0538Trellix Endpoint Security: Schwachstelle ermöglicht PrivilegieneskalationDeutsch2026-02-25csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in Trellix Endpoint Security ausnutzen, um seine Privilegien zu erhöhen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-02-24modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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