CVE-2025-54289: Canonical Lxd

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Privilege Escalation in operations API in Canonical LXD <6.5 on multiple platforms allows attacker with read permissions to hijack terminal or console sessions and execute arbitrary commands via WebSocket connection hijacking format

Affected products

• Canonical Lxd: from 4.0.0, before 5.21.4 (fixed in 5.21.4); from 6.1, before 6.5 (fixed in 6.5)

Published 2025-10-02. Last modified 2026-06-17.