title: Beckhoff: Relative path traversal vulnerability through TwinCAT OPC UA Server
description: TwinCAT OPC UA Server in TF6100 and TS6100 in product versions before 4.3.48.0 or with TcOpcUaServer versions below 3.2.0.194 are prone to a relative path traversal that allow administrators to create or delete any files on the system.
problem types: CWE-23 Relative Path Traversal
affected:
{
product: TwinCAT OPC UA Server
vendor: Beckhoff Automation
versions:
lessThan: 4.3.48.0, status: affected, version: TF6100, versionType: custom
lessThan: 4.3.48.0, status: affected, version: TS6100, versionType: custom
lessThan: 3.2.0.19423, status: affected, version: TcOpcUaServer version, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: HIGH
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
version: 3.1
]
solutions: Please update to a recent version of the affected product (TF6100 or TS6100 version >= 4.3.48.0)