{"id":"CVE-2026-27806","title":"Fleet is open source device management software","summary":"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 ex…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"vendor":"fleetdm","product":"fleet","affected":["fleet < 4.81.1"],"patched":["fleet 4.81.1"],"published":"2026-04-08","updated":"2026-07-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-27806","references":[{"url":"https://github.com/fleetdm/fleet/security/advisories/GHSA-rphv-h674-5hp2","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00114,"epssPercentile":0.0133,"ingestedAt":"2026-07-26T10:11:58.416Z","slug":"CVE-2026-27806","body":"## Overview\n\nFleet 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.\n\n## Affected\n\n- `fleet < 4.81.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fleet 4.81.1`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}