CVE-2023-6448 — Unitronics Vision PLC and HMI Insecure Default Password Vulnerability

Overview

Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.

Vulnerability details

CVE ID

CVE-2023-6448

Vulnerability

Unitronics Vision PLC and HMI Insecure Default Password Vulnerability

Vendor

Unitronics

Affected products

Unitronics: Vision PLC and HMI

Severity

HIGH

Exploitation status

Actively exploited in the wild (CISA KEV)

Published

2023-12-11

Remediation guidance

CVE-2023-6448 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.

Apply the vendor's official security update for Unitronics the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.

Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.

Authoritative references

• NVD — National Vulnerability Database
• MITRE CVE Record
• CISA Known Exploited Vulnerabilities Catalog
• FIRST EPSS — Exploit Prediction Scoring