CVE-2026-7791 PUBLISHED

Assigner: AMZN
Reserved: 04.05.2026 Published: 04.05.2026 Updated: 04.05.2026

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.

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.8

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.5

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Amazon
Product	Workspaces
Versions	Default: unaffected Version 2.6.2034.0 is unaffected

References

https://aws.amazon.com/security/security-bulletins/2026-025-aws/

Problem Types

CWE-367: Time-of-Check Time-of-Use (TOCTOU) Race Condition CWE

Impacts

CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions