CVE-2026-82041: Utmstack

Critical severity, CVSS 9.9. EPSS: 0.4% chance of exploitation in the next 30 days.

UTMStack before 11.2.16 contains a missing authorization vulnerability in UTMIncidentCommandWebsocket.processCommand(), the handler mapped to the /command/{hostname} STOMP destination, where no role check or command allowlist is applied before forwarding supplied commands. Any authenticated user, regardless of role, can send arbitrary operating-system commands over gRPC to any connected agent, resulting in command execution on monitored endpoints where agent processes commonly run as root or SYSTEM.

Affected products

• Utmstack Utmstack: before 11.2.16 (fixed in 11.2.16)

Published 2026-10-02. Last modified 2026-10-06.