CRITICAL 9.3 NVD
CVE-2026-103264
Fleet versions before 4.87.0 contain an authentication bypass vulnerability in the device API that accepts hostnames and hardware serials as authentication toke
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.
References
- https://github.com/fleetdm/fleet/security/advisories/GHSA-vrc8-2wcx-327f
- https://www.vulncheck.com/advisories/fleet-before-4.87.0-authentication-bypass-via-device-
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-10-01 via NVD.
Risk Timeline
CVE Disclosed2026-10-01 · -1 days ago
Remediation Resources
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