title: Limited authentication bypass vulnerability on Western Digital My Cloud devices
description: A limited authentication bypass vulnerability was discovered that could allow an attacker to achieve remote code execution and escalate privileges on the My Cloud devices. Addressed this vulnerability by changing access token validation logic and rewriting rule logic on PHP scripts.
problem types: CWE-287 Improper Authentication
affected:
{
product: My Cloud
vendor: Western Digital
versions:
lessThan: 5.19.117, status: affected, version: My Cloud OS 5, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: NONE
baseScore: 7.8
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
version: 3.1
]
solutions: Update your My Cloud device to firmware version 5.19.117.