CVE-2026-27806 — Fleet Affected by Local Privilege Escalation via Tcl Command Injection in Orbit

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
fleetdm / fleet	affected < 4.81.1

CWE

CWE-78

References

https://github.com/fleetdm/fleet/security/advisories/GHSA-rphv-h674-5hp2

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.