CVE-2026-53605: Reachy Mini Wireless: Local Privilege Escalation via Unrestricted sudo systemctl Grant
Reachy Mini ISO for Wireless contains the necessary files to build a custom Raspberry Pi OS image for the Reachy Mini Wireless robot, using pi-gen. Prior to version 0.2.4, the Reachy Mini Wireless OS image shipped with an overly broad sudoers entry granting the pollen daemon user (uid 1000) passwordless sudo access to /usr/bin/systemctl with no subcommand or argument restriction. This is a local privilege escalation (LPE). Any process running as pollen can obtain full root (uid 0) on the device in three commands, with no additional vulnerability required and no user interaction. This issue has been patched in version 0.2.4.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Reachy Mini Wireless OS imageto a version that resolves this vulnerability.Fixed in 0.2.4
Event History
Frequently Asked Questions
Who can exploit this issue?
Any local process running as the pollen daemon user (uid 1000) can exploit it. The attacker does not need another vulnerability or user interaction once they have that execution context.
Are default affected systems vulnerable?
Affected Reachy Mini Wireless OS images shipped before version 0.2.4 include the unrestricted passwordless sudo permission for /usr/bin/systemctl. This permission allows the pollen user to obtain root access.
What remediation is available?
Update to Reachy Mini ISO for Wireless version 0.2.4, which patches the issue.