Delta Electronics DIALink Path Traversal RCE (CVE-2025-58321)

critical Nessus Plugin ID 278771

Synopsis

An OT application is affected by a path traversal vulnerability.

Description

The Delta Electronics DIALink running on the remote host is affected by a path traversal vulnerability. An unauthenticated, remote attacker can exploit this, via a specially crafted message, to achieve remote code execution.

Solution

Upgrade DIALink to version 1.8.0.0 or later.

Plugin Details

Severity: Critical

ID: 278771

File Name: delta_electronics_dialink_cve-2025-58321.nbin

Version: 1.2

Type: remote

Family: SCADA

Published: 12/16/2025

Updated: 1/5/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.1

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2025-58321

CVSS v3

Risk Factor: Critical

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:deltaww:dialink

Required KB Items: installed_sw/Delta Electronics DIALink

Exploited by Nessus: true

Patch Publication Date: 9/11/2025

Vulnerability Publication Date: 9/11/2025

Reference Information

CVE: CVE-2025-58321

ICSA: 25-259-07

ZDI: ZDI-25-926

Detections

Analytics