CVE-2026-82041

Critical

Description

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.

SeverityCritical

CVSS9.9

Exploit probability—

ProductUTMStack

PublishedOct 2, 2026

First seenOct 2, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

UTMStack UTMStack11.2.16 or later

Patches

github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd

Vendor advisories

github.com/UTMStack/UTMStack/releases/tag/v11.2.16

Affected products

Product	Affected versions	Fixed in
UTMStack UTMStack	v < 11.2.16	11.2.16

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