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Findings

Vulnerability · CVE-2023-6448

Unitronics Vision PLC and HMI Insecure Default Password Vulnerability

Published Nov 28, 2023 · corrected/updated Jun 16, 2026 · Unitronics Vision PLC and HMI · evidence confidence very high

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.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2023-6448 is a critical public vulnerability record for Unitronics Vision PLC and HMI. CISA lists it as known exploited. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Unitronics Vision PLC and HMI is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: unitronics/vision1040 firmware; unitronics/vision1210 firmware; unitronics/vision130 firmware; unitronics/vision230 firmware. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 9.8, EPSS 2.1%. CISA lists it as known exploited. Weakness classes: CWE-1188, CWE-798. Sources contributing to this record: cisa_kev, cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Confirmed in CISA KEV since Nov 28, 2023. Listed in CISA KEV and VulnCheck KEV.

  • Patch and remediation

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Dec 18, 2023.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 5, 2023 · Catalog

    Detected

    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.

  2. Dec 11, 2023 · CISA KEV

    Known exploited

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

  3. Dec 18, 2023 · CISA KEV

    Remediation due

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

  4. Jun 16, 2026 · Catalog

    Updated

    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

  • cpe unitronics/vision1040 firmwareversion unspecified
  • cpe unitronics/vision1210 firmwareversion unspecified
  • cpe unitronics/vision130 firmwareversion unspecified
  • cpe unitronics/vision230 firmwareversion unspecified
  • cpe unitronics/vision280 firmwareversion unspecified
  • cpe unitronics/vision290 firmwareversion unspecified
  • cpe unitronics/vision350 firmwareversion unspecified
  • cpe unitronics/vision430 firmwareversion unspecified
  • cpe unitronics/vision530 firmwareversion unspecified
  • cpe unitronics/vision560 firmwareversion unspecified
  • cpe unitronics/vision570 firmwareversion unspecified
  • cpe unitronics/vision700 firmwareversion unspecified
  • vendor Unitronics Vision PLC and HMIversion unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2023-6448

    Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-6448

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-6448

    30-day exploitation probability 2.1%

    first.org
  • NIST NVDVulnerability recordCVE-2023-6448

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2023-6448

    Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands.

    vulncheck.com

References