{"id":"CVE-2025-14963","state":"PUBLISHED","title":"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 Bri","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.","publishedAt":"2026-02-24T17:11:06.812Z","updatedAt":"2026-02-26T14:44:08.034Z","severity":{"score":6.2,"label":"Medium","version":"4.0","vector":"CVSS: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","source":"trellix"},"assigner":"trellix","products":["Trellix Endpoint HX Agent (xAgent)"],"affected":[{"vendor":"Trellix","product":"Endpoint HX Agent (xAgent)","defaultStatus":"unaffected","versions":[{"version":"36.30.0-17, 35.31.0-37, 34.x, 33.x and 30.x","status":"affected"}]}],"references":["https://thrive.trellix.com/s/article/000015100"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:08:31.050Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/14xxx/CVE-2025-14963.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-14963","state":"PUBLISHED","datePublished":"2026-02-24T17:11:06.812Z","dateUpdated":"2026-02-26T14:44:08.034Z","assignerShortName":"trellix","assignerOrgId":"01626437-bf8f-4d1c-912a-893b5eb04808","dateReserved":"2025-12-19T10:32:38.416Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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":[{"vendor":"Trellix","product":"Endpoint HX Agent (xAgent)","defaultStatus":"unaffected","versions":[{"version":"36.30.0-17, 35.31.0-37, 34.x, 33.x and 30.x","status":"affected"}]}],"references":[{"url":"https://thrive.trellix.com/s/article/000015100"}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":6.2,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS: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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"trellix","orgId":"01626437-bf8f-4d1c-912a-893b5eb04808","dateUpdated":"2026-02-26T07:36:15.415Z"},"impacts":[{"capecId":"CAPEC-30","descriptions":[{"lang":"en","value":"CAPEC-30: Hijacking a Privileged Thread of Execution"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-14963","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-02-25T04:56:08.220547Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-26T14:44:08.034Z"}}]}}}