---
title: "CVE-2023-6448: Unitronics VisiLogic uses a default… | CubePath"
description: "Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative password. An unauthenticated attacker…"
language: en
source: https://cubepath.com/security/cve/CVE-2023-6448
---

# CVE-2023-6448: Unitronics VisiLogic uses a default… | CubePath

## Description

Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative password. An unauthenticated attacker with network access can take administrative control of a vulnerable system.

Official description from the CVE record, published by cisa-cg. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-6448)

## Key data

### CVSS 3.1 Critical 9.8

Score published by cisa-cg in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

| Metric                 | Value     | What it means                                                                       |
| ---------------------- | --------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network   | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low       | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None      | No account or privileges are needed.                                                |
| User interaction       | None      | No action from any user is needed.                                                  |
| Scope                  | Unchanged | The impact stays within the vulnerable component.                                   |
| Confidentiality impact | High      | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | High      | Serious or total effect on the trustworthiness of data.                             |
| Availability impact    | High      | Serious or total effect on availability.                                            |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.02089 (2.1% probability)

Percentile

81.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

Unitronics Vision PLC and HMI Insecure Default Password Vulnerability

Added to the catalog

Dec 11, 2023

Federal due date

Dec 18, 2023

### CISA assessment as of Dec 6, 2023

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

yes

Technical impact

total

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-1188](https://cwe.mitre.org/data/definitions/1188.html) Initialization of a Resource with an Insecure Default

## Affected products

Products listed in the CVE record, as the CNA published them.

- Unitronics VisiLogic

  - affected: before 9.9.00

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [cisa.gov/news-events/alerts/2023/11/28/exploitation-unitron…](https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems) government-resource
- [unitronicsplc.com/cyber\_security\_vision-samba](https://www.unitronicsplc.com/cyber%5Fsecurity%5Fvision-samba/)
- [downloads.unitronicsplc.com/Sites/plc/Visilogic/Version\_Cha…](https://downloads.unitronicsplc.com/Sites/plc/Visilogic/Version%5FChanges-Bug%5FReports/VisiLogic%209.9.00%20Version%20changes.pdf) release-notes
- [downloads.unitronicsplc.com/Sites/plc/Technical\_Library/Uni…](https://downloads.unitronicsplc.com/Sites/plc/Technical%5FLibrary/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf) vendor-advisory

## Timeline

1. ID reserved Nov 30, 2023
2. Record published Dec 5, 2023
3. Added to CISA KEV Dec 11, 2023
4. Record last updated Oct 21, 2025

## Look up another CVE

## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:25 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)