CVE-2026-18759

The background service of ABP or AES runs as NT AUTHORITY\SYSTEM and implements a file-based inter-process communication (IPC) mechanism protected by AES encryption. Because the encryption key file is readable by standard users and protected using DPAPI. Any authenticated local user can recover the key and forge valid IPC requests. Furthermore, the service does not check the identity of the requesting process and validates destination paths using an insufficient substring check. A local attacker can submit crafted encrypted requests containing directory traversal sequences to perform arbitrary file reads and arbitrary file writes as NT AUTHORITY\SYSTEM, leading to full local privilege escalation. Affected products and versions include: ABP (ASUSTOR Backup Plan) 2.0.7.10171 and earlier as well as AES (ASUSTOR EZSync) 1.1.1.3113 and earlier.

CVSS

No CVSS.

References

Link	Resource
https://www.asustor.com/security/security_advisory_detail?id=70

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-04 08:16

Updated : 2026-09-03 16:41

NVD link : CVE-2026-18759

Mitre link : CVE-2026-18759

CVE.ORG link : CVE-2026-18759

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

CWE-287

Improper Authentication

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