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I. Basic Information for CVE-2026-34388
Vulnerability Information

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Vulnerability Title
Fleet vulnerable to Denial of Service via unhandled gRPC log type in launcher endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
Fleet is open source device management software. Prior to 4.81.0, a denial-of-service vulnerability in Fleet's 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对异常条件检查或处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Fleet 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fleet是Fleet Device Management开源的一个设备管理平台,支持多种操作系统和设备,帮助 IT 和安全团队进行设备管理、漏洞报告、MDM 等操作。 Fleet 4.81.0之前版本存在安全漏洞,该漏洞源于gRPC启动器端点存在拒绝服务问题,可能导致服务器进程崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
fleetdmfleet < 4.81.0 -
II. Public POCs for CVE-2026-34388
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III. Intelligence Information for CVE-2026-34388
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