Privilege Escalation in Amazon WorkSpaces Skylight WS Config (before 2.6.2034)
CVE-2026-7791 Published on May 4, 2026
Improper privilege management in the log rotation mechanism of the Skylight Workspace Config Service in Amazon WorkSpaces for Windows before 2.6.2034.0 allows a local non-admin authenticated user to place arbitrary files into arbitrary locations bypassing file system permission protections, leading to local privilege escalation to SYSTEM.
Vulnerability Analysis
CVE-2026-7791 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a TOCTTOU Vulnerability?
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state. This weakness can be security-relevant when an attacker can influence the state of the resource between check and use. This can happen with shared resources such as files, memory, or even variables in multithreaded programs.
CVE-2026-7791 has been classified to as a TOCTTOU vulnerability or weakness.
Products Associated with CVE-2026-7791
stack.watch emails you whenever new vulnerabilities are published in Amazon Workspaces or Amazon Aws. Just hit a watch button to start following.
