CVE-2025-59366: asus router Path Traversal

Vulnerability summary

CVE-2025-59366 is a critical (CVSS 9.2) Path Traversal vulnerability in asus router. EPSS estimates a 15.76% chance of exploitation in the next 30 days, higher than 96.8% of scored vulnerabilities.

Timeline

1. 25-11-2025
   PublishedVulnerability first disclosed.
2. 26-02-2026
   Last modifiedVulnerability information updated.

Description

An authentication-bypass vulnerability exists in AiCloud. This vulnerability can be triggered by an unintended side effect of the Samba functionality, potentially leading to allow execution of specific functions without proper authorization. Refer to the Security Update for ASUS Router Firmware section on the ASUS Security Advisory for more information.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.