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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-103264

Fleet before 4.87.0 Authentication Bypass via Device Identifiers

Description

Fleet versions before 4.87.0 contain an authentication bypass vulnerability in the device API that accepts hostnames and hardware serials as authentication tokens in addition to device UUIDs. Unauthenticated attackers who know or guess these non-secret identifiers can authenticate as iOS/iPadOS hosts to read device data and trigger device-scoped actions including software installation and MDM migration.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

fleetdm fleet

Default version status: unaffected

  • 0 to < 4.87.0affected
  • 4.87.0unaffected
pkg:golang/github.com/fleetdm/fleet

References