High severity · published May 4, 2026
CVE-2026-7791
Local Privilege Escalation via TOCTOU Race Condition in Amazon WorkSpaces Skylight Agent
7.8
CVSS
0.1%
EPSS
No
On KEV
Description
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
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
Workspaces · Amazon
before 2.6.2034.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7791
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7791
aws.amazon.com
https://aws.amazon.com/security/security-bulletins/2026-025-aws/
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