CVE-2026-27806— Fleet Affected by Local Privilege Escalation via Tcl Command Injection in Orbit
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 4.81.1之前版本存在操作系统命令注入漏洞，该漏洞源于密码插入Tcl脚本时未充分转义，可能导致本地权限提升。
Possible ATT&CK Techniques 2 AI
T1068 · Exploitation for Privilege Escalation T1548 · Abuse Elevation Control Mechanism
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I. Basic Information for CVE-2026-27806
Vulnerability Information
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Vulnerability Title
Fleet Affected by Local Privilege Escalation via Tcl Command Injection in Orbit
Source: CVE Program / CVE List V5
Vulnerability Description
Fleet is open source device management software. Prior to 4.81.1, the Orbit agent's FileVault disk encryption key rotation flow on collects a local user's password via a GUI dialog and interpolates it directly into a Tcl/expect script executed via exec.Command("expect", "-c", script). Because the password is inserted into Tcl brace-quoted send {%s}, a password containing } terminates the literal and injects arbitrary Tcl commands. Since Orbit runs as root, this allows a local unprivileged user to escalate to root privileges. This vulnerability is fixed in 4.81.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Fleet 操作系统命令注入漏洞
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 4.81.1之前版本存在操作系统命令注入漏洞，该漏洞源于密码插入Tcl脚本时未充分转义，可能导致本地权限提升。
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
II. Public POCs for CVE-2026-27806
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IV. Related Vulnerabilities
Same product: fleet
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CVE-2026-103265
Fleet before 4.89.0 Information Disclosure via MDM Command R -
CVE-2026-103264
Fleet before 4.87.0 Authentication Bypass via Device Identif -
CVE-2026-101047
Fleet before 4.87.0 Unauthenticated iOS App Download via Pre -
CVE-2026-101046
Fleet before 4.89.0 SQL Injection via ORDER BY Activity Endp -
CVE-2026-101045
Fleet Homebrew Cask OS Command Injection via Metadata
Same vendor: fleetdm
-
CVE-2026-103265
Fleet before 4.89.0 Information Disclosure via MDM Command R -
CVE-2026-103264
Fleet before 4.87.0 Authentication Bypass via Device Identif -
CVE-2026-101047
Fleet before 4.87.0 Unauthenticated iOS App Download via Pre -
CVE-2026-101046
Fleet before 4.89.0 SQL Injection via ORDER BY Activity Endp -
CVE-2026-101045
Fleet Homebrew Cask OS Command Injection via Metadata
Same weakness: CWE-78
-
CVE-2026-55797
Argo CD repo-server command injection via crafted SSH reposi -
CVE-2026-84057
IBM Guardium Data Protection is affected by multiple vulnera -
CVE-2026-107780
Dromara Skyeye Unauthenticated OS Command Injection via text -
CVE-2026-106126
Command Injection -
CVE-2026-84278
IBM Guardium Data Protection Command Injection
V. Comments for CVE-2026-27806
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