title: Western Digital My Cloud OS 5 arbitrary file read and write vulnerability via ftp
description: A vulnerability in the FTP service of Western Digital My Cloud OS 5 devices running firmware versions prior to 5.26.119 allows an attacker to read and write arbitrary files. This could lead to a full NAS compromise and would give remote execution capabilities to the attacker.
problem types: CWE-23 Relative Path Traversal
affected:
{
vendor: Western Digital
product: My Cloud
versions:
version: My Cloud OS 5, status: affected, lessThan: 5.26.119, versionType: custom
platforms: Linux
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
attackVector: LOCAL
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: NONE
baseScore: 6.7
baseSeverity: MEDIUM
]
solutions: Western Digital recommends that users promptly update their devices to the latest firmware by clicking on the firmware update notification.