CVE-2023-6448
Unitronics Vision PLC and HMI Insecure Default Password Vulnerability
Unitronics Vision PLC and HMIIndustrial & IoT
CVSS
9.8CriticalExploit odds (EPSS)2.09%Chance of exploitation activity in the next 30 days, higher than 81% of CVEs. Scored 23 Oct 2026FIRST EPSS
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV
What fixes it
- 9.9.00VisiLogicCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Timeline
Description
Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.
Text from CVE List
Affected versions 1
- VisiLogicaffected: all versions before 9.9.00CVE List
References 6
- unitronicsplc.com/cyber_security_vision-samba/Advisoryvia CVE List
- downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdfAdvisoryvia CVE List
- nvd.nist.gov/vuln/detail/CVE-2023-6448Referencevia CISA KEV
- cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systemsReferencevia CVE List
- downloads.unitronicsplc.com/Sites/plc/Visilogic/Version_Changes-Bug_Reports/VisiLogic%209.9.00%20Version%20changes.pdfReferencevia CVE List
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6448Referencevia CVE List