CVE-2026-7791
Local Privilege Escalation via TOCTOU Race Condition in Amazon WorkSpaces Skylight Agent
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.
INFO
Published Date :
May 4, 2026, 10:16 p.m.
Last Modified :
Oct. 26, 2026, 7:10 p.m.
Remotely Exploit :
No
Source :
ff89ba41-3aa1-4d27-914a-91399e9639e5
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | ff89ba41-3aa1-4d27-914a-91399e9639e5 | ||||
| CVSS 4.0 | HIGH | ff89ba41-3aa1-4d27-914a-91399e9639e5 | ||||
| CVSS 4.0 | HIGH | ff89ba41-3aa1-4d27-914a-91399e9639e5 |
Solution
- Update Skylight Workspace Config Service to the latest version.
- Ensure proper privilege management in log rotation.
- Apply vendor patches as soon as they are available.
Public PoC/Exploit Available at Github
CVE-2026-7791 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-7791.
| URL | Resource |
|---|---|
| https://aws.amazon.com/security/security-bulletins/2026-025-aws/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-7791 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-7791
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-7791 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-7791 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added Translation Title: Workspaces de Amazon, Description: Gestión inadecuada de privilegios en el mecanismo de rotación de registros del servicio Skylight Workspace Config en Amazon WorkSpaces para Windows antes de 2.6.2034.0 permite a un usuario local autenticado no administrador colocar archivos arbitrarios en ubicaciones arbitrarias eludiendo las protecciones de permisos del sistema de archivos, lo que lleva a una escalada de privilegios local a SYSTEM. -
CVE Modified by ff89ba41-3aa1-4d27-914a-91399e9639e5
Oct. 20, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/7xxx/CVE-2026-7791.json">CVE-2026-7791</a> Added Reference https://aws.amazon.com/security/security-bulletins/2026-025-aws/ Removed Reference https://aws.amazon.com/security/security-bulletins/2026-025-aws/ -
CVE Modified by ff89ba41-3aa1-4d27-914a-91399e9639e5
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Amazon', 'product': 'Workspaces', 'versions': [{'status': 'unaffected', 'version': '2.6.2034.0'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-7791', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-05T00:00:00+00:00'} -
New CVE Received by ff89ba41-3aa1-4d27-914a-91399e9639e5
May. 04, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-367 Added Reference https://aws.amazon.com/security/security-bulletins/2026-025-aws/