{"id":"EUVD-2026-16795","enisaUuid":"5719c61a-e804-3e9b-a619-31108d654434","description":"Fleet is open source device management software. Prior to 4.81.0, a denial-of-service vulnerability in Fleet\u0027s gRPC Launcher endpoint allows an authenticated host to crash the entire Fleet server process by sending an unexpected log type value. The server terminates immediately, disrupting all connected hosts, MDM enrollments, and API consumers. Version 4.81.0 patches the issue.","datePublished":"Mar 27, 2026, 7:13:00 PM","dateUpdated":"Mar 31, 2026, 1:44:23 PM","baseScore":6.6,"baseScoreVersion":"4.0","baseScoreVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","references":"https://github.com/fleetdm/fleet/security/advisories/GHSA-w254-4hp5-7cvv\n","aliases":"CVE-2026-34388\n","assigner":"GitHub_M","epss":0.27,"enisaIdProduct":[{"id":"d16f2bbc-91f9-38e6-bd37-fb27f1c5a75f","product":{"name":"Fleet","vendor":{"name":"fleetdm"}},"product_version":"\u003c 4.81.0"}],"enisaIdVendor":[{"id":"e7cf8b35-7c5d-331c-b7e9-3a7faaaeb505","vendor":{"name":"fleetdm"}}],"enisaIdVulnerability":[{"id":"aaa7cb04-6acb-302b-9200-e14287ca23fb","vulnerability":{"id":"CVE-2026-34388","description":"Fleet is open source device management software. Prior to 4.81.0, a denial-of-service vulnerability in Fleet\u0027s gRPC Launcher endpoint allows an authenticated host to crash the entire Fleet server process by sending an unexpected log type value. The server terminates immediately, disrupting all connected hosts, MDM enrollments, and API consumers. Version 4.81.0 patches the issue.","datePublished":"Mar 27, 2026, 7:13:00 PM","dateUpdated":"Mar 31, 2026, 1:44:23 PM","status":"PUBLISHED","baseScore":6.6,"baseScoreVersion":"4.0","baseScoreVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","references":"https://github.com/fleetdm/fleet/security/advisories/GHSA-w254-4hp5-7cvv\n","enisa_id":"EUVD-2026-16795\n","assigner":"GitHub_M","epss":0.27,"dataProcessed":"Nov 5, 2026, 7:19:12 AM","vulnerabilityProduct":[{"id":"aed18de5-87d1-39db-98bc-ea2cce6a3b58","product":{"name":"Fleet","vendor":{"name":"fleetdm"}},"product_version":"\u003c 4.81.0"}],"vulnerabilityVendor":[{"id":"d76b62d0-f28a-3d93-9e3f-34918705277e","vendor":{"name":"fleetdm"}}]}}],"enisaIdAdvisory":[]}