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CVE-2026-103264— Fleet before 4.87.0 Authentication Bypass via Device Identifiers

Quick assessment

Affected
fleetdm fleet
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fleet 4.87.0 之前的版本存在一个身份验证绕过漏洞，该漏洞位于设备 API 中。此 API 除了接受设备 UUID 外，还允许使用主机名和硬件序列号作为身份验证令牌。未认证的攻击者如果知道或能够猜测这些非机密标识符，即可冒充 iOS/iPadOS 主机进行身份验证，从而读取设备数据并触发与设备相关的操作，包括安装软件和执行 MDM（移动设备管理）迁移。

CVSS 9.1 · Critical
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I. Basic Information for CVE-2026-103264

Vulnerability Information
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Vulnerability Title
Fleet before 4.87.0 Authentication Bypass via Device Identifiers
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
fleetdm fleet 0 ~ 4.87.0 -

II. Public POCs for CVE-2026-103264

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III. Intelligence Information for CVE-2026-103264

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Vendor Advisories for CVE-2026-103264 (2)

IV. Related Vulnerabilities

Same product: fleet
Same vendor: fleetdm
Same weakness: CWE-287

V. Comments for CVE-2026-103264

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