CVE-2023-6448

Unitronics VisiLogic

Published 5 Dec 2023 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 11 Dec 2023, with a remediation deadline of 18 Dec 2023 for US federal agencies.

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

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.

References

downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf · Vendor Advisory
downloads.unitronicsplc.com/Sites/plc/Visilogic/Version_Changes-Bug_Reports/VisiLogic%209.9.00%20Version%20changes.pdf · Release Notes
www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems · Third Party Advisory, US Government Resource
www.unitronicsplc.com/cyber_security_vision-samba/ · Product
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6448 · US Government Resource