CVE-2023-6448 CRITICAL

CVE-2023-6448: Unitronics VisiLogic uses a default administrative password

Vendor Unitronics
Product VisiLogic
Weakness CWE-1188
KEV Status Known Exploited
Published December 5, 2023
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

CISA mandated remediation

02CISA Required Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Key dates

03Disclosure timeline

December 5, 2023 CVE published
October 21, 2025 Record updated