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Vulnerabilities

Vulnerability · CVE-2023-6448

Unitronics Vision PLC and HMI Insecure Default Password Vulnerability

Published Nov 28, 2023 · catalog updated Jun 16, 2026 · Unitronics Vision PLC and HMI

Patch now

CVE-2023-6448 is in the CISA known-exploited catalog, due Dec 18, 2023. Confirm Unitronics Vision PLC and HMI against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
2.09%
Remediation
Remediation guidance
Affected products
cpe unitronics/vision1040 firmware · cpe unitronics/vision1210 firmware · cpe unitronics/vision130 firmware · cpe unitronics/vision230 firmware · cpe unitronics/vision280 firmware · cpe unitronics/vision290 firmware

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • 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

How to fix CVE-2023-6448

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-6448 is in the CISA known-exploited catalog, due Dec 18, 2023. Confirm Unitronics Vision PLC and HMI against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-1188; CWE-798: Use of Hard-coded Credentials. EPSS 2.09%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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.

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

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.