# CVE-2023-6448

## Summary

- **CVE ID:** CVE-2023-6448
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-1188
- **Published:** Dec 5, 2023
- **Last Modified:** Oct 21, 2025

## 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.

## Affected Products

- Unitronics — VisiLogic (0)

## References

- [CNA](https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems)
- [CNA](https://www.unitronicsplc.com/cyber_security_vision-samba/)
- [CNA](https://downloads.unitronicsplc.com/Sites/plc/Visilogic/Version_Changes-Bug_Reports/VisiLogic%209.9.00%20Version%20changes.pdf)
- [CNA](https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6448)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 13.29%
- **EPSS Percentile:** 94.0

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Dec 11, 2023
- **Due Date:** Dec 18, 2023

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._