CVE-2026-7791 - Local Privilege Escalation via TOCTOU Race Condition in Amazon WorkSpaces Skylight Agent

Bulletin ID: 2026-025-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 2026/05/04 15:30 PM PDT Description: Amazon Skylight Workspace Config Service ( slwsconfigservice) is a critical background service within Amazon WorkSpaces that manages system configuration, monitors health, and updates components. We identified CVE-2026-7791 which allows a local non-admin authenticated user to escalate privileges to SYSTEM by exploiting a race condition in the Skylight Workspace Config Service's log file archival process. Impacted versions: Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.