CVE-2023-6448
Unitronics VisiLogic uses a default administrative password
Unitronics Vision PLC and HMI Insecure Default Password Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA notes
Note that while it is possible to change the default password, implementors are encouraged to remove affected controllers from public networks and update the affected firmware: https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf; https://nvd.nist.gov/vuln/detail/CVE-2023-6448
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation Context
as of October 14, 2026- CISA added CVE-2023-6448 to the KEV catalog 6 days after its CVE record was published. The median for entries added in 2023 is 12 days.
- Its current EPSS score (2.1%) is higher than that of 8% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Unitronics | Unitronics VisiLogic | 0 to <9.9.00 |
References
4 LinksRecord Details
Related
Tool categories
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.